ARM: at91: sam9g20 udc add dt support

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/arch/arm/boot/dts/at91sam9g20.dtsi b/arch/arm/boot/dts/at91sam9g20.dtsi
index f091d67..92f3662 100644
--- a/arch/arm/boot/dts/at91sam9g20.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20.dtsi
@@ -191,6 +191,13 @@
 				interrupts = <21 4>;
 				status = "disabled";
 			};
+
+			usb1: gadget@fffa4000 {
+				compatible = "atmel,at91rm9200-udc";
+				reg = <0xfffa4000 0x4000>;
+				interrupts = <10 4>;
+				status = "disabled";
+			};
 		};
 
 		nand0: nand@40000000 {