ARM: sun4i: dt: Remove grouping + simple-bus compatible for regulators

According to Documentation/devicetree/bindings/regulator/regulator.txt
regulator nodes should not be placed under 'simple-bus'.

Mark Rutland also explains about it at:
http://www.spinics.net/lists/linux-usb/msg101497.html

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/arch/arm/boot/dts/sun4i-a10-hackberry.dts b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
index 3a1595f..6692d33 100644
--- a/arch/arm/boot/dts/sun4i-a10-hackberry.dts
+++ b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
@@ -54,16 +54,12 @@
 		};
 	};
 
-	regulators {
-		compatible = "simple-bus";
-
-		reg_emac_3v3: emac-3v3 {
-			compatible = "regulator-fixed";
-			regulator-name = "emac-3v3";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			enable-active-high;
-			gpio = <&pio 7 19 0>;
-		};
+	reg_emac_3v3: emac-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "emac-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpio = <&pio 7 19 0>;
 	};
 };