cpufreq: exynos: Add missing static

Add missing 'static' qualifiers.
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

drivers/cpufreq/exynos4210-cpufreq.c

@@ -114,7 +114,7 @@ static void exynos4210_set_apll(unsigned int index)
 	} while (tmp != (0x1 << EXYNOS4_CLKSRC_CPU_MUXCORE_SHIFT));
 }
 
-bool exynos4210_pms_change(unsigned int old_index, unsigned int new_index)
+static bool exynos4210_pms_change(unsigned int old_index, unsigned int new_index)
 {
 	unsigned int old_pm = apll_freq_4210[old_index].mps >> 8;
 	unsigned int new_pm = apll_freq_4210[new_index].mps >> 8;

drivers/cpufreq/exynos4x12-cpufreq.c

@@ -166,7 +166,7 @@ static void exynos4x12_set_apll(unsigned int index)
 	} while (tmp != (0x1 << EXYNOS4_CLKSRC_CPU_MUXCORE_SHIFT));
 }
 
-bool exynos4x12_pms_change(unsigned int old_index, unsigned int new_index)
+static bool exynos4x12_pms_change(unsigned int old_index, unsigned int new_index)
 {
 	unsigned int old_pm = apll_freq_4x12[old_index].mps >> 8;
 	unsigned int new_pm = apll_freq_4x12[new_index].mps >> 8;

drivers/cpufreq/exynos5250-cpufreq.c

@@ -143,7 +143,7 @@ static void set_apll(unsigned int new_index,
 
 }
 
-bool exynos5250_pms_change(unsigned int old_index, unsigned int new_index)
+static bool exynos5250_pms_change(unsigned int old_index, unsigned int new_index)
 {
 	unsigned int old_pm = apll_freq_5250[old_index].mps >> 8;
 	unsigned int new_pm = apll_freq_5250[new_index].mps >> 8;