arm64: dts: rockchip: fix nanopc-t6 sdmmc regulator

sdmmc on the nanopc-t6 is powered by vcc3v3_sd_s0, not vcc_3v3_s3
add the vcc3v3_sd_s0 regulator, and control it with gpio4_a5
Signed-off-by: John Clark <inindev@gmail.com>
Link: https://lore.kernel.org/r/20240102024054.1030313-1-inindev@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts

@@ -160,6 +160,17 @@ vcc3v3_pcie30: vcc3v3-pcie30-regulator {
 		vin-supply = <&vcc5v0_sys>;
 	};
 
+	vcc3v3_sd_s0: vcc3v3-sd-s0-regulator {
+		compatible = "regulator-fixed";
+		enable-active-low;
+		gpio = <&gpio4 RK_PA5 GPIO_ACTIVE_LOW>;
+		regulator-boot-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "vcc3v3_sd_s0";
+		vin-supply = <&vcc_3v3_s3>;
+	};
+
 	vdd_4g_3v3: vdd-4g-3v3-regulator {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -560,7 +571,7 @@ &sdmmc {
 	no-mmc;
 	no-sdio;
 	sd-uhs-sdr104;
-	vmmc-supply = <&vcc_3v3_s3>;
+	vmmc-supply = <&vcc3v3_sd_s0>;
 	vqmmc-supply = <&vccio_sd_s0>;
 	status = "okay";
 };