ARM: dts: exynos: move MIPI phy to PMU node in Exynos4

The MIPI phy is actually part of the Power Management Unit system
controller.  It does not have its own address space, thus keeping the
node under soc causes warnings:

  xynos4412-i9305.dtb: soc: video-phy: {'compatible': ['samsung,s5pv210-mipi-video-phy'],
    '#phy-cells': [[1]], 'syscon': [[11]], 'phandle': [[13]]} should not be valid under {'type': 'object'}

Link: https://lore.kernel.org/r/20230207192851.549242-3-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arch/arm/boot/dts/exynos4.dtsi

@@ -105,12 +105,6 @@ memory-controller@12570000 {
 			reg = <0x12570000 0x14>;
 		};
 
-		mipi_phy: video-phy {
-			compatible = "samsung,s5pv210-mipi-video-phy";
-			#phy-cells = <1>;
-			syscon = <&pmu_system_controller>;
-		};
-
 		pd_mfc: power-domain@10023c40 {
 			compatible = "samsung,exynos4210-pd";
 			reg = <0x10023c40 0x20>;
@@ -181,11 +175,16 @@ sys_reg: syscon@10010000 {
 		};
 
 		pmu_system_controller: system-controller@10020000 {
-			compatible = "samsung,exynos4210-pmu", "syscon";
+			compatible = "samsung,exynos4210-pmu", "simple-mfd", "syscon";
 			reg = <0x10020000 0x4000>;
 			interrupt-controller;
 			#interrupt-cells = <3>;
 			interrupt-parent = <&gic>;
+
+			mipi_phy: mipi-phy {
+				compatible = "samsung,s5pv210-mipi-video-phy";
+				#phy-cells = <1>;
+			};
 		};
 
 		dsi_0: dsi@11c80000 {

arch/arm/boot/dts/exynos4412.dtsi

@@ -798,7 +798,7 @@ &pmu {
 };
 
 &pmu_system_controller {
-	compatible = "samsung,exynos4412-pmu", "syscon";
+	compatible = "samsung,exynos4412-pmu", "simple-mfd", "syscon";
 	clock-names = "clkout0", "clkout1", "clkout2", "clkout3",
 			"clkout4", "clkout8", "clkout9";
 	clocks = <&clock CLK_OUT_DMC>, <&clock CLK_OUT_TOP>,