ARM: dts: add Exynos4 and Exynos5 clock controller nodes

Add clock controller nodes for EXYNOS4210, EXYNOS4x12, EXYNOS5250
and EXYNOS5440 SoCs.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi
index 5c5a699..f5834d0 100644
--- a/arch/arm/boot/dts/exynos5440.dtsi
+++ b/arch/arm/boot/dts/exynos5440.dtsi
@@ -16,6 +16,12 @@
 
 	interrupt-parent = <&gic>;
 
+	clock: clock-controller@0x160000 {
+		compatible = "samsung,exynos5440-clock";
+		reg = <0x160000 0x1000>;
+		#clock-cells = <1>;
+	};
+
 	gic:interrupt-controller@2E0000 {
 		compatible = "arm,cortex-a15-gic";
 		#interrupt-cells = <3>;