ARM: dts: imx7d-sdb: Describe the SD card regulator

Improve the devicetree description by adding the SD card regulator
that is controlled via GPIO5_2.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx7d-sdb.dts

@@ -60,6 +60,17 @@ extended_io: gpio-expander@0 {
 		};
 	};
 
+	reg_sd1_vmmc: regulator-sd1-vmmc {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_SD1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		startup-delay-us = <200000>;
+		off-on-delay-us = <20000>;
+	};
+
 	reg_usb_otg1_vbus: regulator-usb-otg1-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "usb_otg1_vbus";
@@ -477,6 +488,7 @@ &usdhc1 {
 	pinctrl-0 = <&pinctrl_usdhc1>;
 	cd-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
 	wp-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
+	vmmc-supply = <&reg_sd1_vmmc>;
 	wakeup-source;
 	keep-power-in-suspend;
 	status = "okay";