ARM: dts: imx7d-sdb: Adjust the regulator nodes

It is not recommended to place the regulator nodes inside 'simple-bus',
so adjust them accordingly.

The motivation for rearranging this is to make it easier to add new
regulator nodes in the future.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

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

@@ -73,14 +73,8 @@
 		};
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		reg_usb_otg1_vbus: regulator@0 {
+	reg_usb_otg1_vbus: regulator-usb-otg1-vbus {
 		compatible = "regulator-fixed";
-			reg = <0>;
 		regulator-name = "usb_otg1_vbus";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
@@ -88,9 +82,8 @@
 		enable-active-high;
 	};
 
-		reg_usb_otg2_vbus: regulator@1 {
+	reg_usb_otg2_vbus: regulator-usb-otg1-vbus {
 		compatible = "regulator-fixed";
-			reg = <1>;
 		regulator-name = "usb_otg2_vbus";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
@@ -98,23 +91,20 @@
 		enable-active-high;
 	};
 
-		reg_can2_3v3: regulator@2 {
+	reg_can2_3v3: regulator-can2-3v3 {
 		compatible = "regulator-fixed";
-			reg = <2>;
 		regulator-name = "can2-3v3";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		gpio = <&gpio1 7 GPIO_ACTIVE_LOW>;
 	};
 
-		reg_vref_1v8: regulator@3 {
+	reg_vref_1v8: regulator-vref-1v8 {
 		compatible = "regulator-fixed";
-			reg = <3>;
 		regulator-name = "vref-1v8";
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <1800000>;
 	};
-	};
 };
 
 &adc1 {