ARM: dts: Add basic PM domains for EXYNOS5420

Add DT nodes for gsc, isp, mfc, disp, mau, g2d and msc PM domains.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5420.dtsi

@@ -90,6 +90,41 @@ mct_map: mct-map {
 		};
 	};
 
+	gsc_pd: power-domain@10044000 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044000 0x20>;
+	};
+
+	isp_pd: power-domain@10044020 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044020 0x20>;
+	};
+
+	mfc_pd: power-domain@10044060 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044060 0x20>;
+	};
+
+	disp_pd: power-domain@100440C0 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x100440C0 0x20>;
+	};
+
+	mau_pd: power-domain@100440E0 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x100440E0 0x20>;
+	};
+
+	g2d_pd: power-domain@10044100 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044100 0x20>;
+	};
+
+	msc_pd: power-domain@10044120 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044120 0x20>;
+	};
+
 	pinctrl_0: pinctrl@13400000 {
 		compatible = "samsung,exynos5420-pinctrl";
 		reg = <0x13400000 0x1000>;