ARM: dts: OMAP5: Add dr_mode for dwc3

Added dr_mode property in dwc3 and set its default mode to device.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/omap5.dtsi

@@ -649,6 +649,7 @@ dwc3@4a030000 {
 				reg = <0x4a030000 0x10000>;
 				interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
 				usb-phy = <&usb2_phy>, <&usb3_phy>;
+				dr_mode = "peripheral";
 				tx-fifo-resize;
 			};
 		};