ARM: dts: exynos: add USB DWC3 supplies to Arndale

Add required voltage regulators for USB DWC3 block on Exynos5250 Arndale
board.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220123111644.25540-3-krzysztof.kozlowski@canonical.com

arch/arm/boot/dts/exynos5250-arndale.dts

@@ -632,3 +632,8 @@
 		#size-cells = <0>;
 	};
 };
+
+&usbdrd {
+	vdd10-supply = <&ldo15_reg>;
+	vdd33-supply = <&ldo12_reg>;
+};

arch/arm/boot/dts/exynos5250.dtsi

@@ -634,7 +634,7 @@
 			#sound-dai-cells = <1>;
 		};
 
-		usb_dwc3 {
+		usbdrd: usb3 {
 			compatible = "samsung,exynos5250-dwusb3";
 			clocks = <&clock CLK_USB3>;
 			clock-names = "usbdrd30";