arm64: dts: renesas: rz-smarc: Replace fixed regulator for USB VBUS

Replace the fixed regulator for USB VBUS and use the proper one that
controls regulator based on VBUS detection.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240702180032.207275-5-biju.das.jz@bp.renesas.comSigned-off-by: Philipp Zabel <p.zabel@pengutronix.de>

arch/arm64/boot/dts/renesas/rz-smarc-common.dtsi

@@ -54,14 +54,6 @@ codec_dai: simple-audio-card,codec {
 		};
 	};
 
-	usb0_vbus_otg: regulator-usb0-vbus-otg {
-		compatible = "regulator-fixed";
-
-		regulator-name = "USB0_VBUS_OTG";
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-	};
-
 	vccq_sdhi1: regulator-vccq-sdhi1 {
 		compatible = "regulator-gpio";
 		regulator-name = "SDHI1 VccQ";
@@ -139,6 +131,9 @@ &ohci1 {
 
 &phyrst {
 	status = "okay";
+	usb0_vbus_otg: regulator-vbus {
+		regulator-name = "vbus";
+	};
 };
 
 &scif0 {