ARM: dts: exynos: Remove regulators node container in Origen and N710x

Consistently put fixed regulators directly below root node, instead of
artificial "regulators" node in Exynos4210 Origen and Exynos4412 N710x.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos4210-origen.dts

@@ -34,21 +34,14 @@ chosen {
 		stdout-path = &serial_2;
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		mmc_reg: regulator@0 {
+	mmc_reg: voltage-regulator {
 		compatible = "regulator-fixed";
-			reg = <0>;
 		regulator-name = "VMEM_VDD_2.8V";
 		regulator-min-microvolt = <2800000>;
 		regulator-max-microvolt = <2800000>;
 		gpio = <&gpx1 1 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
-	};
 
 	gpio_keys {
 		compatible = "gpio-keys";

arch/arm/boot/dts/exynos4412-n710x.dts

@@ -13,7 +13,6 @@ memory@40000000 {
 
 	/* bootargs are passed in by bootloader */
 
-	regulators {
 	cam_vdda_reg: voltage-regulator-9 {
 		compatible = "regulator-fixed";
 		regulator-name = "CAM_SENSOR_CORE_1.2V";
@@ -22,7 +21,6 @@ cam_vdda_reg: voltage-regulator-9 {
 		gpio = <&gpm4 1 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
-	};
 };
 
 &buck9_reg {