arm64: dts: zii-ultra: Fix regulator-vsd-3v3's vin-supply

Regulator-vsd-3v3 is supplied via GEN_3V3 rail which is an output of
an "always on" load switch supplied by 3V3_MAIN. GEN_3V3 is also used
as vin-supply by a number of peripherals, so adding it also allows us
to follow the schematic more closely.

Signed-off-by: Andrey Smirnov <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Chris Healy <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: [email protected],
Cc: [email protected]
Signed-off-by: Shawn Guo <[email protected]>

arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi

@@ -68,11 +68,20 @@
 		regulator-always-on;
 	};
 
+	reg_gen_3p3: regulator-gen-3p3 {
+		compatible = "regulator-fixed";
+		vin-supply = <&reg_3p3_main>;
+		regulator-name = "GEN_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
 	reg_usdhc2_vmmc: regulator-vsd-3v3 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_reg_usdhc2>;
 		compatible = "regulator-fixed";
-		vin-supply = <&reg_3p3_main>;
+		vin-supply = <&reg_gen_3p3>;
 		regulator-name = "3V3_SD";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;