arm: exynos: fix set_mmc_clk for exynos4x12

Fix the set_mmc_clk() for exnos4x12.
If board is exynos4x12, mmc clock should be set to wrong value.
Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

arch/arm/cpu/armv7/exynos/clock.c

@@ -1410,7 +1410,8 @@ void set_mmc_clk(int dev_index, unsigned int div)
 	else {
 		if (proid_is_exynos4412())
 			exynos4x12_set_mmc_clk(dev_index, div);
-		exynos4_set_mmc_clk(dev_index, div);
+		else
+			exynos4_set_mmc_clk(dev_index, div);
 	}
 }