PM / AVS: rockchip-io: Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/power/avs/rockchip-io-domain.c

@@ -271,6 +271,7 @@ static const struct of_device_id rockchip_iodomain_match[] = {
 	},
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, rockchip_iodomain_match);
 
 static int rockchip_iodomain_probe(struct platform_device *pdev)
 {