ARM: dts: add dt nodes for hdmi subsystem for exynos5420

Add hdmi and mixer device tree nodes for Exynos 5420 SoC.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5420.dtsi

@@ -291,4 +291,23 @@ i2c_3: i2c@12C90000 {
 		pinctrl-0 = <&i2c3_bus>;
 		status = "disabled";
 	};
+
+	hdmi@14530000 {
+		compatible = "samsung,exynos4212-hdmi";
+		reg = <0x14530000 0x70000>;
+		interrupts = <0 95 0>;
+		clocks = <&clock 413>, <&clock 143>, <&clock 768>,
+			<&clock 158>, <&clock 640>;
+		clock-names = "hdmi", "sclk_hdmi", "sclk_pixel",
+			"sclk_hdmiphy", "mout_hdmi";
+		status = "disabled";
+	};
+
+	mixer@14450000 {
+		compatible = "samsung,exynos5420-mixer";
+		reg = <0x14450000 0x10000>;
+		interrupts = <0 94 0>;
+		clocks = <&clock 431>, <&clock 143>;
+		clock-names = "mixer", "sclk_hdmi";
+	};
 };