ARM: dts: imx6qdl-sabresd: Move regulators outside of "simple-bus"

It is not recommended to place regulators inside "simple-bus", so move
them out to make it cleaner the addition of new regulators.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-sabresd.dtsi

@@ -17,14 +17,8 @@ memory@10000000 {
 		reg = <0x10000000 0x40000000>;
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		reg_usb_otg_vbus: regulator@0 {
+	reg_usb_otg_vbus: regulator-usb-otg-vbus {
 		compatible = "regulator-fixed";
-			reg = <0>;
 		regulator-name = "usb_otg_vbus";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
@@ -33,9 +27,8 @@ reg_usb_otg_vbus: regulator@0 {
 		vin-supply = <&swbst_reg>;
 	};
 
-		reg_usb_h1_vbus: regulator@1 {
+	reg_usb_h1_vbus: regulator-usb-h1-vbus {
 		compatible = "regulator-fixed";
-			reg = <1>;
 		regulator-name = "usb_h1_vbus";
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
@@ -44,17 +37,15 @@ reg_usb_h1_vbus: regulator@1 {
 		vin-supply = <&swbst_reg>;
 	};
 
-		reg_audio: regulator@2 {
+	reg_audio: regulator-audio {
 		compatible = "regulator-fixed";
-			reg = <2>;
 		regulator-name = "wm8962-supply";
 		gpio = <&gpio4 10 0>;
 		enable-active-high;
 	};
 
-		reg_pcie: regulator@3 {
+	reg_pcie: regulator-pcie {
 		compatible = "regulator-fixed";
-			reg = <3>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_pcie_reg>;
 		regulator-name = "MPCIE_3V3";
@@ -63,7 +54,6 @@ reg_pcie: regulator@3 {
 		gpio = <&gpio3 19 0>;
 		enable-active-high;
 	};
-	};
 
 	gpio-keys {
 		compatible = "gpio-keys";