ARM: dts: imx6sx-sdb: Rearrange the regulators node

It is not recommended to place regulators inside "simple-bus", so
move them out. The motivation for doing this is to make it easier to
adding new regulators.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6sx-sdb.dtsi

@@ -49,14 +49,8 @@ volume-down {
 		};
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		vcc_sd3: regulator@0 {
+	vcc_sd3: regulator-vcc-sd3 {
 		compatible = "regulator-fixed";
-			reg = <0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_vcc_sd3>;
 		regulator-name = "VCC_SD3";
@@ -66,9 +60,8 @@ vcc_sd3: regulator@0 {
 		enable-active-high;
 	};
 
-		reg_usb_otg1_vbus: regulator@1 {
+	reg_usb_otg1_vbus: regulator-usb-otg1-vbus {
 		compatible = "regulator-fixed";
-			reg = <1>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_usb_otg1>;
 		regulator-name = "usb_otg1_vbus";
@@ -78,9 +71,8 @@ reg_usb_otg1_vbus: regulator@1 {
 		enable-active-high;
 	};
 
-		reg_usb_otg2_vbus: regulator@2 {
+	reg_usb_otg2_vbus: regulator-usb-otg2-vbus {
 		compatible = "regulator-fixed";
-			reg = <2>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_usb_otg2>;
 		regulator-name = "usb_otg2_vbus";
@@ -90,25 +82,22 @@ reg_usb_otg2_vbus: regulator@2 {
 		enable-active-high;
 	};
 
-		reg_psu_5v: regulator@3 {
+	reg_psu_5v: regulator-psu-5v {
 		compatible = "regulator-fixed";
-			reg = <3>;
 		regulator-name = "PSU-5V0";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 	};
 
-		reg_lcd_3v3: regulator@4 {
+	reg_lcd_3v3: regulator-lcd-3v3 {
 		compatible = "regulator-fixed";
-			reg = <4>;
 		regulator-name = "lcd-3v3";
 		gpio = <&gpio3 27 0>;
 		enable-active-high;
 	};
 
-		reg_peri_3v3: regulator@5 {
+	reg_peri_3v3: regulator-peri-3v3 {
 		compatible = "regulator-fixed";
-			reg = <5>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_peri_3v3>;
 		regulator-name = "peri_3v3";
@@ -119,9 +108,8 @@ reg_peri_3v3: regulator@5 {
 		regulator-always-on;
 	};
 
-		reg_enet_3v3: regulator@6 {
+	reg_enet_3v3: regulator-enet-3v3 {
 		compatible = "regulator-fixed";
-			reg = <6>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_enet_3v3>;
 		regulator-name = "enet_3v3";
@@ -129,7 +117,6 @@ reg_enet_3v3: regulator@6 {
 		regulator-max-microvolt = <3300000>;
 		gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
 	};
-	};
 
 	sound {
 		compatible = "fsl,imx6sx-sdb-wm8962", "fsl,imx-audio-wm8962";