arm64: dts: exynos: move MIPI phy to PMU node in Exynos5433

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

  exynos5433-tm2e.dtb: soc@0: video-phy: {'compatible': ['samsung,exynos5433-mipi-video-phy'], ...
    should not be valid under {'type': 'object'}

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20230127194057.186458-9-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: krzk

arch/arm64/boot/dts/exynos/exynos5433.dtsi

@@ -911,12 +911,20 @@
 		};
 
 		pmu_system_controller: system-controller@105c0000 {
-			compatible = "samsung,exynos5433-pmu", "syscon";
+			compatible = "samsung,exynos5433-pmu", "simple-mfd", "syscon";
 			reg = <0x105c0000 0x5008>;
 			#clock-cells = <1>;
 			clock-names = "clkout16";
 			clocks = <&xxti>;
 
+			mipi_phy: mipi-phy {
+				compatible = "samsung,exynos5433-mipi-video-phy";
+				#phy-cells = <1>;
+				samsung,cam0-sysreg = <&syscon_cam0>;
+				samsung,cam1-sysreg = <&syscon_cam1>;
+				samsung,disp-sysreg = <&syscon_disp>;
+			};
+
 			reboot: syscon-reboot {
 				compatible = "syscon-reboot";
 				regmap = <&pmu_system_controller>;
@@ -936,15 +944,6 @@
 			interrupts = <GIC_PPI 9 0xf04>;
 		};
 
-		mipi_phy: video-phy {
-			compatible = "samsung,exynos5433-mipi-video-phy";
-			#phy-cells = <1>;
-			samsung,pmu-syscon = <&pmu_system_controller>;
-			samsung,cam0-sysreg = <&syscon_cam0>;
-			samsung,cam1-sysreg = <&syscon_cam1>;
-			samsung,disp-sysreg = <&syscon_disp>;
-		};
-
 		decon: decon@13800000 {
 			compatible = "samsung,exynos5433-decon";
 			reg = <0x13800000 0x2104>;