ARM: dts: OMAP4: Add omap control usb data

Add omap control usb data in omap4 device tree file. This will have the
register address of registers to power on the PHY and to write to
mailbox. The information about this data node is available @
Documentation/devicetree/bindings/usb/omap-usb.txt

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index b7db1a2..ded2130 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -559,5 +559,13 @@
 				interrupts = <0 77 0x4>;
 			};
 		};
+
+		omap_control_usb: omap-control-usb@4a002300 {
+			compatible = "ti,omap-control-usb";
+			reg = <0x4a002300 0x4>,
+			      <0x4a00233c 0x4>;
+			reg-names = "control_dev_conf", "otghs_control";
+			ti,type = <1>;
+		};
 	};
 };