rtc: Rename RTC_SUPPORT to RTC

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 93eff14..15ddb0d 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -1073,7 +1073,7 @@
 	  Enable support for REMOTEPROCs in SPL. This permits to load
 	  a remote processor firmware in SPL.
 
-config SPL_RTC_SUPPORT
+config SPL_RTC
 	bool "Support RTC drivers"
 	help
 	  Enable RTC (Real-time Clock) support in SPL. This includes support
@@ -1562,7 +1562,7 @@
 	  be already in memory when TPL takes over, e.g. loaded by the boot
 	  ROM.
 
-config TPL_RTC_SUPPORT
+config TPL_RTC
 	bool "Support RTC drivers"
 	help
 	  Enable RTC (Real-time Clock) support in TPL. This includes support
diff --git a/configs/chromebook_link64_defconfig b/configs/chromebook_link64_defconfig
index 10d4fd1..147cf68 100644
--- a/configs/chromebook_link64_defconfig
+++ b/configs/chromebook_link64_defconfig
@@ -38,7 +38,7 @@
 CONFIG_SPL_NET_SUPPORT=y
 CONFIG_SPL_PCI=y
 CONFIG_SPL_PCH=y
-CONFIG_SPL_RTC_SUPPORT=y
+CONFIG_SPL_RTC=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_GPIO=y
diff --git a/configs/openpiton_riscv64_spl_defconfig b/configs/openpiton_riscv64_spl_defconfig
index 67fbcdd..5107e87 100644
--- a/configs/openpiton_riscv64_spl_defconfig
+++ b/configs/openpiton_riscv64_spl_defconfig
@@ -25,7 +25,7 @@
 # CONFIG_SPL_BANNER_PRINT is not set
 CONFIG_SPL_CPU=y
 CONFIG_SPL_FS_EXT4=y
-CONFIG_SPL_RTC_SUPPORT=y
+CONFIG_SPL_RTC=y
 CONFIG_SYS_PROMPT="openpiton$ "
 # CONFIG_CMD_CPU is not set
 CONFIG_CMD_BOOTZ=y
diff --git a/configs/qemu-x86_64_defconfig b/configs/qemu-x86_64_defconfig
index 62016e9..ae94e19 100644
--- a/configs/qemu-x86_64_defconfig
+++ b/configs/qemu-x86_64_defconfig
@@ -37,7 +37,7 @@
 CONFIG_SPL_NET_SUPPORT=y
 CONFIG_SPL_PCI=y
 CONFIG_SPL_PCH=y
-CONFIG_SPL_RTC_SUPPORT=y
+CONFIG_SPL_RTC=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_BOOTEFI_SELFTEST=y
 CONFIG_CMD_NVEDIT_EFI=y
diff --git a/configs/sandbox_noinst_defconfig b/configs/sandbox_noinst_defconfig
index 68afab6..646b532 100644
--- a/configs/sandbox_noinst_defconfig
+++ b/configs/sandbox_noinst_defconfig
@@ -33,7 +33,7 @@
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_SPL_I2C=y
-CONFIG_SPL_RTC_SUPPORT=y
+CONFIG_SPL_RTC=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_LICENSE=y
 CONFIG_CMD_BOOTZ=y
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index cd3aa87..4c02d91 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -34,7 +34,7 @@
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_SPL_I2C=y
-CONFIG_SPL_RTC_SUPPORT=y
+CONFIG_SPL_RTC=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_LICENSE=y
 CONFIG_CMD_BOOTZ=y
diff --git a/drivers/Makefile b/drivers/Makefile
index 3a82ad6..6a05787 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -20,7 +20,7 @@
 obj-$(CONFIG_$(SPL_TPL_)PHY) += phy/
 obj-$(CONFIG_$(SPL_TPL_)PINCTRL) += pinctrl/
 obj-$(CONFIG_$(SPL_TPL_)RAM) += ram/
-obj-$(CONFIG_$(SPL_TPL_)RTC_SUPPORT) += rtc/
+obj-$(CONFIG_$(SPL_TPL_)RTC) += rtc/
 obj-$(CONFIG_$(SPL_TPL_)SERIAL_SUPPORT) += serial/
 obj-$(CONFIG_$(SPL_TPL_)SPI_SUPPORT) += spi/
 obj-$(CONFIG_$(SPL_TPL_)TIMER) += timer/