ARM: samsung: move CONFIG_DEBUG_S3C_UART to Kconfig.debug

Before we can separate plat-samsung from the individual platforms,
this one has to get moved to a place where it remains accessible.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200806182059.2431-13-krzk@kernel.orgSigned-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/Kconfig.debug

@@ -1497,6 +1497,16 @@ config DEBUG_S3C64XX_UART
 config DEBUG_S5PV210_UART
 	bool
 
+config DEBUG_S3C_UART
+	depends on DEBUG_S3C2410_UART || DEBUG_S3C24XX_UART || \
+		   DEBUG_S3C64XX_UART ||  DEBUG_S5PV210_UART || \
+		   DEBUG_EXYNOS_UART
+	int
+	default "0" if DEBUG_S3C_UART0
+	default "1" if DEBUG_S3C_UART1
+	default "2" if DEBUG_S3C_UART2
+	default "3" if DEBUG_S3C_UART3
+
 config DEBUG_OMAP2PLUS_UART
 	bool
 	depends on ARCH_OMAP2PLUS

arch/arm/plat-samsung/Kconfig

@@ -290,13 +290,5 @@ config SAMSUNG_WAKEMASK
 	  and above. This code allows a set of interrupt to wakeup-mask
 	  mappings. See <plat/wakeup-mask.h>
 
-config DEBUG_S3C_UART
-	depends on PLAT_SAMSUNG
-	int
-	default "0" if DEBUG_S3C_UART0
-	default "1" if DEBUG_S3C_UART1
-	default "2" if DEBUG_S3C_UART2
-	default "3" if DEBUG_S3C_UART3
-
 endmenu
 endif