ARM: S5P6440: Add serial port support

This patch adds UART serial port support for S5P6440 CPU. Most of the
serial support of Samsung's 6400 CPU is reused for 6440 CPU.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 9ff47db0..d7d687f 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -459,7 +459,7 @@
 	int
 	depends on ARM && PLAT_S3C
 	default 2 if ARCH_S3C2400
-	default 4 if ARCH_S5PC1XX || ARCH_S3C64XX || CPU_S3C2443
+	default 4 if ARCH_S5P6440 || ARCH_S5PC1XX || ARCH_S3C64XX || CPU_S3C2443
 	default 3
 	help
 	  Select the number of available UART ports for the Samsung S3C
@@ -526,11 +526,11 @@
 	  Serial port support for the Samsung S3C24A0 SoC
 
 config SERIAL_S3C6400
-	tristate "Samsung S3C6400/S3C6410 Serial port support"
-	depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410)
+	tristate "Samsung S3C6400/S3C6410/S5P6440 Serial port support"
+	depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440)
 	default y
 	help
-	  Serial port support for the Samsung S3C6400 and S3C6410
+	  Serial port support for the Samsung S3C6400, S3C6410 and S5P6440
 	  SoCs
 
 config SERIAL_S5PC100