Avalon usb interface should be 0.

usbutils.c

@@ -154,7 +154,7 @@ static struct usb_find_devices find_dev[] = {
 		.idProduct = 0x6001,
 		.kernel = 0,
 		.config = 1,
-		.interface = 1,
+		.interface = 0,
 		.timeout = AVALON_TIMEOUT_MS,
 		.epcount = ARRAY_SIZE(ava_eps),
 		.eps = ava_eps },