usb: gadget: Add bcdDevice for the DWC3 USB Gadget Controller

Add an entry in usb_gadget_controller_number() for the DWC3 gadget
controller. Without it, it is not possible to bind the USB Ethernet driver.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index b9b0819..2c8f235 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -206,5 +206,7 @@
 		return 0x21;
 	else if (gadget_is_fotg210(gadget))
 		return 0x22;
+	else if (gadget_is_dwc3(gadget))
+		return 0x23;
 	return -ENOENT;
 }