ARM: dts: db600c: add usb support

This patch adds usb host and otg support on board with required
regulators.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts

@@ -58,6 +58,12 @@ s1 {
 					bias-pull-down;
 				};
 
+				s3 {
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1400000>;
+					qcom,switch-mode-frequency = <4800000>;
+				};
+
 				s4 {
 					regulator-min-microvolt	= <1800000>;
 					regulator-max-microvolt	= <1800000>;
@@ -72,6 +78,18 @@ s7 {
 					qcom,switch-mode-frequency = <3200000>;
 				 };
 
+				l3 {
+					regulator-min-microvolt = <3050000>;
+					regulator-max-microvolt = <3300000>;
+					bias-pull-down;
+				};
+
+				l4 {
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1800000>;
+					bias-pull-down;
+				};
+
 				l5 {
 					regulator-min-microvolt = <2750000>;
 					regulator-max-microvolt = <3000000>;
@@ -85,6 +103,12 @@ l6 {
 					regulator-max-microvolt = <2950000>;
 					bias-pull-down;
 				};
+
+				l23 {
+					regulator-min-microvolt = <1700000>;
+					regulator-max-microvolt = <1900000>;
+					bias-pull-down;
+				};
 			};
 		};
 
@@ -111,6 +135,46 @@ serial@16640000 {
 			};
 		};
 
+		/* OTG */
+		phy@12500000 {
+			status		= "okay";
+			dr_mode		= "peripheral";
+			vddcx-supply	= <&pm8921_s3>;
+			v3p3-supply	= <&pm8921_l3>;
+			v1p8-supply	= <&pm8921_l4>;
+		};
+
+		phy@12520000 {
+			status		= "okay";
+			vddcx-supply	= <&pm8921_s3>;
+			v3p3-supply	= <&pm8921_l3>;
+			v1p8-supply	= <&pm8921_l23>;
+		};
+
+		phy@12530000 {
+			status		= "okay";
+			vddcx-supply	= <&pm8921_s3>;
+			v3p3-supply	= <&pm8921_l3>;
+			v1p8-supply	= <&pm8921_l23>;
+		};
+
+		gadget@12500000 {
+			status = "okay";
+		};
+
+		/* OTG */
+		usb@12500000 {
+			status = "okay";
+		};
+
+		usb@12520000 {
+			status = "okay";
+		};
+
+		usb@12530000 {
+			status = "okay";
+		};
+
 		amba {
 			/* eMMC */
 			sdcc@12400000 {