global: Rename SPL_ to XPL_

Use XPL_ as the symbol to indicate an SPL build. This means that SPL_ is
no-longer set.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/domain/Makefile b/drivers/power/domain/Makefile
index 2daab73..110646c 100644
--- a/drivers/power/domain/Makefile
+++ b/drivers/power/domain/Makefile
@@ -3,7 +3,7 @@
 # Copyright (c) 2016, NVIDIA CORPORATION.
 #
 
-obj-$(CONFIG_$(SPL_)POWER_DOMAIN) += power-domain-uclass.o
+obj-$(CONFIG_$(XPL_)POWER_DOMAIN) += power-domain-uclass.o
 obj-$(CONFIG_APPLE_PMGR_POWER_DOMAIN) += apple-pmgr.o
 obj-$(CONFIG_BCM6328_POWER_DOMAIN) += bcm6328-power-domain.o
 obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain-legacy.o imx8-power-domain.o
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index a2d59de..48f7dd4 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -4,33 +4,33 @@
 # Lukasz Majewski <l.majewski@samsung.com>
 
 obj-$(CONFIG_$(SPL_TPL_)DM_PMIC) += pmic-uclass.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_FAN53555) += fan53555.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_DA9063) += da9063.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_MAX77663) += max77663.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_FAN53555) += fan53555.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_DA9063) += da9063.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_MAX77663) += max77663.o
 obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
 obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
 obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_BD71837) += bd71837.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_MP5416) += mp5416.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_PCA9450) += pca9450.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_BD71837) += bd71837.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_MP5416) += mp5416.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_PFUZE100) += pfuze100.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_PCA9450) += pca9450.o
 obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
 obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
 obj-$(CONFIG_PMIC_AB8500) += ab8500.o
 obj-$(CONFIG_PMIC_ACT8846) += act8846.o
 obj-$(CONFIG_PMIC_AS3722) += as3722.o as3722_gpio.o
-obj-$(CONFIG_$(SPL_)PMIC_AXP) += axp.o
+obj-$(CONFIG_$(XPL_)PMIC_AXP) += axp.o
 obj-$(CONFIG_PMIC_MAX8997) += max8997.o
 obj-$(CONFIG_PMIC_QCOM) += pmic_qcom.o
 obj-$(CONFIG_$(SPL_TPL_)PMIC_RK8XX) += rk8xx.o
-obj-$(CONFIG_$(SPL_)PMIC_RN5T567) += rn5t567.o
+obj-$(CONFIG_$(XPL_)PMIC_RN5T567) += rn5t567.o
 obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
 obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
 obj-$(CONFIG_DM_PMIC_TPS65910) += pmic_tps65910_dm.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_TPS80031) += tps80031.o
-obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
-obj-$(CONFIG_$(SPL_)PMIC_LP873X) += lp873x.o
-obj-$(CONFIG_$(SPL_)PMIC_LP87565) += lp87565.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_TPS80031) += tps80031.o
+obj-$(CONFIG_$(XPL_)PMIC_PALMAS) += palmas.o
+obj-$(CONFIG_$(XPL_)PMIC_LP873X) += lp873x.o
+obj-$(CONFIG_$(XPL_)PMIC_LP87565) += lp87565.o
 obj-$(CONFIG_PMIC_STPMIC1) += stpmic1.o
 obj-$(CONFIG_PMIC_TPS65217) += pmic_tps65217.o
 obj-$(CONFIG_PMIC_TPS65219) += tps65219.o
@@ -38,7 +38,7 @@
 obj-$(CONFIG_PMIC_RAA215300) += raa215300.o
 obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
 
-ifeq ($(CONFIG_$(SPL_)POWER_LEGACY),y)
+ifeq ($(CONFIG_$(XPL_)POWER_LEGACY),y)
 obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
 obj-$(CONFIG_POWER_PCA9450) += pmic_pca9450.o
 obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
@@ -47,5 +47,5 @@
 obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o
 endif
 
-obj-$(CONFIG_$(SPL_)POWER_TPS62362) += pmic_tps62362.o
+obj-$(CONFIG_$(XPL_)POWER_TPS62362) += pmic_tps62362.o
 obj-$(CONFIG_SPL_POWER_TPS65910) += pmic_tps65910.o
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
index 54db088..cac02aa 100644
--- a/drivers/power/regulator/Makefile
+++ b/drivers/power/regulator/Makefile
@@ -4,41 +4,41 @@
 # Przemyslaw Marczak <p.marczak@samsung.com>
 #
 
-obj-$(CONFIG_$(SPL_)DM_REGULATOR) += regulator-uclass.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR) += regulator-uclass.o
 obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o
 obj-$(CONFIG_REGULATOR_AS3722)	+= as3722_regulator.o
-obj-$(CONFIG_$(SPL_)REGULATOR_AXP) += axp_regulator.o
-obj-$(CONFIG_$(SPL_)REGULATOR_AXP_USB_POWER) += axp_usb_power.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_DA9063) += da9063.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_MAX77663) += max77663_regulator.o
+obj-$(CONFIG_$(XPL_)REGULATOR_AXP) += axp_regulator.o
+obj-$(CONFIG_$(XPL_)REGULATOR_AXP_USB_POWER) += axp_usb_power.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_DA9063) += da9063.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_MAX77663) += max77663_regulator.o
 obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
 obj-$(CONFIG_DM_REGULATOR_NPCM8XX) += npcm8xx_regulator.o
-obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_BD71837) += bd71837.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_PCA9450) += pca9450.o
-obj-$(CONFIG_$(SPL_)REGULATOR_PWM) += pwm_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_FAN53555) += fan53555.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_COMMON) += regulator_common.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_FIXED) += fixed.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_GPIO) += gpio-regulator.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_PFUZE100) += pfuze100.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_BD71837) += bd71837.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_PCA9450) += pca9450.o
+obj-$(CONFIG_$(XPL_)REGULATOR_PWM) += pwm_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_FAN53555) += fan53555.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_COMMON) += regulator_common.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_FIXED) += fixed.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_GPIO) += gpio-regulator.o
 obj-$(CONFIG_DM_REGULATOR_QCOM_RPMH) += qcom-rpmh-regulator.o
 obj-$(CONFIG_$(SPL_TPL_)REGULATOR_RK8XX) += rk8xx.o
 obj-$(CONFIG_DM_REGULATOR_S2MPS11) += s2mps11_regulator.o
 obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
 obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o
 obj-$(CONFIG_REGULATOR_TPS65090) += tps65090_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_PALMAS) += palmas_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_PBIAS) += pbias_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_LP873X) += lp873x_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_LP87565) += lp87565_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_PALMAS) += palmas_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_PBIAS) += pbias_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_LP873X) += lp873x_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_LP87565) += lp87565_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_DM_REGULATOR_TPS65910) += tps65910_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS65911) += tps65911_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_TPS65911) += tps65911_regulator.o
 obj-$(CONFIG_DM_REGULATOR_TPS62360) += tps62360_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS6287X) += tps6287x_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS80031) += tps80031_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_TPS6287X) += tps6287x_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_TPS80031) += tps80031_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_STPMIC1) += stpmic1.o
 obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o
 obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o
-obj-$(CONFIG_$(SPL_)DM_REGULATOR_ANATOP) += anatop_regulator.o
+obj-$(CONFIG_$(XPL_)DM_REGULATOR_ANATOP) += anatop_regulator.o
 obj-$(CONFIG_DM_REGULATOR_TPS65219) += tps65219_regulator.o