ARM: S3C64XX: Migrate clock handling to Common Clock Framework

This patch migrates the s3c64xx platform to use the new clock driver
using Common Clock Framework.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3f7714d..76b025e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -727,6 +727,7 @@
 	select ARM_VIC
 	select CLKDEV_LOOKUP
 	select CLKSRC_SAMSUNG_PWM
+	select COMMON_CLK
 	select CPU_V6
 	select GENERIC_CLOCKEVENTS
 	select GPIO_SAMSUNG
@@ -740,7 +741,6 @@
 	select S3C_DEV_NAND
 	select S3C_GPIO_TRACK
 	select SAMSUNG_ATAGS
-	select SAMSUNG_CLKSRC
 	select SAMSUNG_GPIOLIB_4BIT
 	select SAMSUNG_WDT_RESET
 	select USB_ARCH_HAS_OHCI