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/drivers/Makefile b/drivers/Makefile
index 872999e..742a547 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -45,8 +45,8 @@
 obj-$(CONFIG_ARMADA_XP) += ddr/marvell/axp/
 obj-$(CONFIG_$(SPL_)ALTERA_SDRAM) += ddr/altera/
 obj-$(CONFIG_ARCH_IMX8M) += ddr/imx/imx8m/
-obj-$(CONFIG_SPL_POWER_SUPPORT) += power/ power/pmic/
-obj-$(CONFIG_SPL_POWER_SUPPORT) += power/regulator/
+obj-$(CONFIG_SPL_POWER) += power/ power/pmic/
+obj-$(CONFIG_SPL_POWER) += power/regulator/
 obj-$(CONFIG_SPL_POWER_DOMAIN) += power/domain/
 obj-$(CONFIG_SPL_DM_RESET) += reset/
 obj-$(CONFIG_SPL_DMA) += dma/