ARM: SAMSUNG: Add SERIAL_SAMSUNG_UARTS_4 Kconfig option

Add SERIAL_SAMSUNG_UARTS_4 to mop up the number of cases currently using
four Samsung compatible UARTS.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

drivers/serial/Kconfig

@@ -455,11 +455,18 @@ config SERIAL_SAMSUNG
 	  provide all of these ports, depending on how the serial port
 	  pins are configured.
 
+config SERIAL_SAMSUNG_UARTS_4
+	bool
+	depends on ARM && PLAT_SAMSUNG
+	default y if CPU_S3C2443
+	help
+	  Internal node for the common case of 4 Samsung compatible UARTs
+
 config SERIAL_SAMSUNG_UARTS
 	int
 	depends on ARM && PLAT_S3C
 	default 2 if ARCH_S3C2400
-	default 4 if ARCH_S5P6440 || ARCH_S5PC1XX || ARCH_S5PV210 || ARCH_S3C64XX || CPU_S3C2443
+	default 4 if SERIAL_SAMSUNG_UARTS_4
 	default 3
 	help
 	  Select the number of available UART ports for the Samsung S3C
@@ -526,8 +533,9 @@ config SERIAL_S3C24A0
 	  Serial port support for the Samsung S3C24A0 SoC
 
 config SERIAL_S3C6400
-	tristate "Samsung S3C6400/S3C6410/S5P6440 Serial port support"
+	tristate "Samsung S3C6400/S3C6410/S5P6440 Seria port support"
 	depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440)
+	select SERIAL_SAMSUNG_UARTS_4
 	default y
 	help
 	  Serial port support for the Samsung S3C6400, S3C6410 and S5P6440
@@ -536,6 +544,7 @@ config SERIAL_S3C6400
 config SERIAL_S5PC100
 	tristate "Samsung S5PC100 Serial port support"
 	depends on SERIAL_SAMSUNG && CPU_S5PC100
+	select SERIAL_SAMSUNG_UARTS_4
 	default y
 	help
 	  Serial port support for the Samsung S5PC100 SoCs
@@ -543,6 +552,7 @@ config SERIAL_S5PC100
 config SERIAL_S5PV210
 	tristate "Samsung S5PV210 Serial port support"
 	depends on SERIAL_SAMSUNG && CPU_S5PV210
+	select SERIAL_SAMSUNG_UARTS_4
 	default y
 	help
 	  Serial port support for Samsung's S5P Family of SoC's