ARM: dts: Add PMU to exynos5410

Exynos initialization code now relies on obtaining the PMU address,
so prepare a PMU node for Exynos5410.

Fixes: fce9e5bb ("ARM: EXYNOS: Add support for mapping PMU base
address via DT")
Signed-off-by: NAndreas Faerber <afaerber@suse.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5410.dtsi

@@ -91,6 +91,11 @@
 			reg = <0x10000000 0x100>;
 		};
 
+		pmu_system_controller: system-controller@10040000 {
+			compatible = "samsung,exynos5410-pmu", "syscon";
+			reg = <0x10040000 0x5000>;
+		};
+
 		mct: mct@101C0000 {
 			compatible = "samsung,exynos4210-mct";
 			reg = <0x101C0000 0xB00>;