arm: exynos: Add get_lcd_clk and set_lcd_clk callbacks for Exynos5420

Add get_lcd_clk and set_lcd_clk callbacks for Exynos5420 needed by
exynos video driver.
Also, configure ACLK_400_DISP1 as the parent for MUX_ACLK_400_DISP1_SUB_SEL.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/cpu/armv7/exynos/exynos5_setup.h b/arch/arm/cpu/armv7/exynos/exynos5_setup.h
index 3242093..2eea48a 100644
--- a/arch/arm/cpu/armv7/exynos/exynos5_setup.h
+++ b/arch/arm/cpu/armv7/exynos/exynos5_setup.h
@@ -783,7 +783,7 @@
 #define CLK_SRC_TOP2_VAL	0x11101000
 #define CLK_SRC_TOP3_VAL	0x11111111
 #define CLK_SRC_TOP4_VAL	0x11110111
-#define CLK_SRC_TOP5_VAL	0x11111100
+#define CLK_SRC_TOP5_VAL	0x11111101
 #define CLK_SRC_TOP6_VAL	0x11110111
 #define CLK_SRC_TOP7_VAL	0x00022200