arm: dts: k3-j7200: Add USB related DT entries

Add USB related DT entries to enable USB device mode.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
diff --git a/arch/arm/dts/k3-j7200-common-proc-board-u-boot.dtsi b/arch/arm/dts/k3-j7200-common-proc-board-u-boot.dtsi
index 10bb069..4dca59c 100644
--- a/arch/arm/dts/k3-j7200-common-proc-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-j7200-common-proc-board-u-boot.dtsi
@@ -102,3 +102,17 @@
 &exp2 {
 	u-boot,dm-spl;
 };
+
+&main_usbss0_pins_default {
+	u-boot,dm-spl;
+};
+
+&usbss0 {
+	u-boot,dm-spl;
+	ti,usb2-only;
+};
+
+&usb0 {
+	dr_mode = "peripheral";
+	u-boot,dm-spl;
+};