rtc: s3c: remove HAVE_S3C_RTC in favor of direct dependencies

The config HAVE_S3C_RTC is not really needed since we can simply just
add the dependencies directly to RTC_DRV_S3C. Also, one less config to
keep track of!
Signed-off-by: Will McVicker <willmcvicker@google.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211013212256.3425889-1-willmcvicker@google.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

arch/arm/Kconfig

@@ -475,7 +475,6 @@ config ARCH_S3C24XX
 	select GPIOLIB
 	select GENERIC_IRQ_MULTI_HANDLER
 	select HAVE_S3C2410_I2C if I2C
-	select HAVE_S3C_RTC if RTC_CLASS
 	select NEED_MACH_IO_H
 	select S3C2410_WATCHDOG
 	select SAMSUNG_ATAGS

arch/arm/mach-exynos/Kconfig

@@ -21,7 +21,6 @@ menuconfig ARCH_EXYNOS
 	select HAVE_ARM_ARCH_TIMER if ARCH_EXYNOS5
 	select HAVE_ARM_SCU if SMP
 	select HAVE_S3C2410_I2C if I2C
-	select HAVE_S3C_RTC if RTC_CLASS
 	select PINCTRL
 	select PINCTRL_EXYNOS
 	select PM_GENERIC_DOMAINS if PM

arch/arm/mach-s5pv210/Kconfig

@@ -13,7 +13,6 @@ config ARCH_S5PV210
 	select COMMON_CLK_SAMSUNG
 	select GPIOLIB
 	select HAVE_S3C2410_I2C if I2C
-	select HAVE_S3C_RTC if RTC_CLASS
 	select PINCTRL
 	select PINCTRL_EXYNOS
 	select SOC_SAMSUNG

arch/arm64/Kconfig.platforms

@@ -94,7 +94,6 @@ config ARCH_EXYNOS
 	select COMMON_CLK_SAMSUNG
 	select EXYNOS_PM_DOMAINS if PM_GENERIC_DOMAINS
 	select EXYNOS_PMU
-	select HAVE_S3C_RTC if RTC_CLASS
 	select PINCTRL
 	select PINCTRL_EXYNOS
 	select PM_GENERIC_DOMAINS if PM

drivers/rtc/Kconfig

@@ -1404,16 +1404,10 @@ config RTC_DRV_OMAP
 	  This driver can also be built as a module, if so, module
 	  will be called rtc-omap.
 
-config HAVE_S3C_RTC
-	bool
-	help
-	  This will include RTC support for Samsung SoCs. If
-	  you want to include RTC support for any machine, kindly
-	  select this in the respective mach-XXXX/Kconfig file.
-
 config RTC_DRV_S3C
 	tristate "Samsung S3C series SoC RTC"
-	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
+	depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S3C24XX || ARCH_S5PV210 || \
+		   COMPILE_TEST
 	help
 	  RTC (Realtime Clock) driver for the clock inbuilt into the
 	  Samsung S3C24XX series of SoCs. This can provide periodic