drivers: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD

Use the new symbol to refer to any 'SPL' build, including TPL and VPL

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index e53d52c..51ef51f 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -10,7 +10,7 @@
 obj-$(CONFIG_$(SPL_TPL_)CROS_EC_SANDBOX) += cros_ec_sandbox.o
 obj-$(CONFIG_$(SPL_TPL_)CROS_EC_LPC) += cros_ec_lpc.o
 
-ifndef CONFIG_SPL_BUILD
+ifndef CONFIG_XPL_BUILD
 obj-$(CONFIG_SANDBOX) += sandbox_adder.o
 obj-$(CONFIG_CROS_EC_I2C) += cros_ec_i2c.o
 obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
@@ -19,13 +19,13 @@
 endif
 
 ifdef CONFIG_$(SPL_)DM_I2C
-ifndef CONFIG_SPL_BUILD
+ifndef CONFIG_XPL_BUILD
 obj-$(CONFIG_SANDBOX) += i2c_eeprom_emul.o
 obj-$(CONFIG_USB_HUB_USB251XB) += usb251xb.o
 endif
 endif
 ifdef CONFIG_SPL_OF_PLATDATA
-ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_XPL_BUILD
 obj-$(CONFIG_SANDBOX) += spltest_sandbox.o
 endif
 endif
diff --git a/drivers/misc/gsc.c b/drivers/misc/gsc.c
index feb02f9..dee0bdd 100644
--- a/drivers/misc/gsc.c
+++ b/drivers/misc/gsc.c
@@ -389,7 +389,7 @@
 	if (priv->rtc)
 		dev_set_priv(priv->rtc, priv);
 
-#ifdef CONFIG_SPL_BUILD
+#ifdef CONFIG_XPL_BUILD
 	gsc_banner(dev);
 #endif
 
diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c
index bbd7e24..5d3db0b 100644
--- a/drivers/misc/imx8/scu.c
+++ b/drivers/misc/imx8/scu.c
@@ -191,7 +191,7 @@
 	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
-#ifdef CONFIG_SPL_BUILD
+#ifdef CONFIG_XPL_BUILD
 	plat->base = (struct mu_type *)CONFIG_MU_BASE_SPL;
 #else
 	plat->base = (struct mu_type *)addr;