ARM: dts: Add wm8994 regulator support on smdk5250

This patch adds the required regulator supplies and properties
for wm8994 codec on smdk5250 board.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5250-smdk5250.dts

@@ -37,6 +37,30 @@ eeprom@50 {
 		};
 	};
 
+	vdd:fixed-regulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd-supply";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	dbvdd:fixed-regulator@1 {
+		compatible = "regulator-fixed";
+		regulator-name = "dbvdd-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	spkvdd:fixed-regulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "spkvdd-supply";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
 	i2c@12C70000 {
 		samsung,i2c-sda-delay = <100>;
 		samsung,i2c-max-bus-freq = <20000>;
@@ -47,8 +71,17 @@ eeprom@51 {
 		};
 
 		wm8994: wm8994@1a {
-			 compatible = "wlf,wm8994";
-			 reg = <0x1a>;
+			compatible = "wlf,wm8994";
+			reg = <0x1a>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			AVDD2-supply = <&vdd>;
+			CPVDD-supply = <&vdd>;
+			DBVDD-supply = <&dbvdd>;
+			SPKVDD1-supply = <&spkvdd>;
+			SPKVDD2-supply = <&spkvdd>;
 		};
 	};