ASoC: rockchip: spdif: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>

sound/soc/rockchip/rk_spdif.c

@@ -451,7 +451,6 @@ static struct platform_driver rockchip_spdif_driver = {
 	.remove	= spdif_remove,
 	.driver	= {
 		.name	= "rockchip-spdif",
-		.owner	= THIS_MODULE,
 		.of_match_table = of_match_ptr(rockchip_spdif_match),
 	},
 };