PM / devfreq: update the name of EXYNOS clock registers that were omitted

In the commit, "PM / devfreq: update the name of EXYNOS clock register"
ommitted one register.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/drivers/devfreq/exynos4_bus.c b/drivers/devfreq/exynos4_bus.c
index 565aa98..cfaa98a 100644
--- a/drivers/devfreq/exynos4_bus.c
+++ b/drivers/devfreq/exynos4_bus.c
@@ -868,9 +868,9 @@
 	int ret;
 
 	/* Enable pause function for DREX2 DVFS */
-	tmp = __raw_readl(S5P_DMC_PAUSE_CTRL);
-	tmp |= DMC_PAUSE_ENABLE;
-	__raw_writel(tmp, S5P_DMC_PAUSE_CTRL);
+	tmp = __raw_readl(EXYNOS4_DMC_PAUSE_CTRL);
+	tmp |= EXYNOS4_DMC_PAUSE_ENABLE;
+	__raw_writel(tmp, EXYNOS4_DMC_PAUSE_CTRL);
 
 	tmp = __raw_readl(EXYNOS4_CLKDIV_DMC0);