ARM: dts: add mfc node for exynos5800

Adds the mfc node to exynos5800 which uses MFCv8.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5800.dtsi

@@ -22,3 +22,7 @@ / {
 &clock {
 	compatible = "samsung,exynos5800-clock";
 };
+
+&mfc {
+	compatible = "samsung,mfc-v8";
+};