Rename SPL_POWER_SUPPORT to SPL_POWER

Rename this option so that CONFIG_IS_ENABLED can be used with it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/include/configs/imx8mq_evk.h b/include/configs/imx8mq_evk.h
index 1861eba..302c458 100644
--- a/include/configs/imx8mq_evk.h
+++ b/include/configs/imx8mq_evk.h
@@ -21,7 +21,7 @@
 /*#define CONFIG_ENABLE_DDR_TRAINING_DEBUG*/
 #define CONFIG_SPL_WATCHDOG_SUPPORT
 #define CONFIG_SPL_DRIVERS_MISC_SUPPORT
-#define CONFIG_SPL_POWER_SUPPORT
+#define CONFIG_SPL_POWER
 #define CONFIG_SPL_I2C_SUPPORT
 #define CONFIG_SPL_LDSCRIPT		"arch/arm/cpu/armv8/u-boot-spl.lds"
 #define CONFIG_SPL_STACK		0x187FF0