ARM: S5PV310: Update Kconfig and Makefile for supporting CPUFREQ

This patch adds ARCH_HAS_CPUFREQ in Kconfig of ARCH_S5PV310 and updates
Makefile for supporting build S5PV310 CPUFREQ driver.

Signed-off-by: Sunyoung Kang <sy0816.kang@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d56d21c..5ecaec6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -738,6 +738,7 @@
 	select ARCH_SPARSEMEM_ENABLE
 	select GENERIC_GPIO
 	select HAVE_CLK
+	select ARCH_HAS_CPUFREQ
 	select GENERIC_CLOCKEVENTS
 	select HAVE_S3C_RTC if RTC_CLASS
 	select HAVE_S3C2410_I2C if I2C