EXYNOS5250: Add support cpufreq for EXYNOS5250

This patch adds support cpufreq for EXYNOS5250 SoC. Basically,
the exynos-cpufreq.c is used commonly and exynos5250-cpufreq.c
is used for EXYNOS5250(two Cortex-A15 cores) SoC.

Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 9b99a96..2e33515 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -48,6 +48,7 @@
 	depends on ARCH_EXYNOS
 	select ARM_EXYNOS4210_CPUFREQ if CPU_EXYNOS4210
 	select ARM_EXYNOS4X12_CPUFREQ if (SOC_EXYNOS4212 || SOC_EXYNOS4412)
+	select ARM_EXYNOS5250_CPUFREQ if SOC_EXYNOS5250
 	default y
 	help
 	  This adds the CPUFreq driver common part for Samsung
@@ -67,3 +68,9 @@
 	help
 	  This adds the CPUFreq driver for Samsung EXYNOS4X12
 	  SoC (EXYNOS4212 or EXYNOS4412).
+
+config ARM_EXYNOS5250_CPUFREQ
+	bool "Samsung EXYNOS5250"
+	help
+	  This adds the CPUFreq driver for Samsung EXYNOS5250
+	  SoC.