ARM: dts: Add PMU to exynos5410

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

Fixes: fce9e5bb2526 ("ARM: EXYNOS: Add support for mapping PMU base
address via DT")

Signed-off-by: Andreas Faerber <[e-mail]>
Signed-off-by: Kukjin Kim <[e-mail]>

arch/arm/boot/dts/exynos5410.dtsi

···
 			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>;