usb: musb: sunxi: support module autoloading

MODULE_DEVICE_TABLE() is missing, so the module isn't auto-loading on
sunxi systems using the OTG controller. This commit adds the missing
line so it loads automatically when building it as a module and running
on a system with an USB OTG port.
Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

drivers/usb/musb/sunxi.c

@@ -752,6 +752,7 @@ static const struct of_device_id sunxi_musb_match[] = {
 	{ .compatible = "allwinner,sun8i-a33-musb", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, sunxi_musb_match);
 
 static struct platform_driver sunxi_musb_driver = {
 	.probe = sunxi_musb_probe,