drm/rockchip: Drop owner assignment from platform_driver

platform_driver does not need to set an owner because
platform_driver_register() will set it.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -554,7 +554,6 @@ static struct platform_driver rockchip_drm_platform_driver = {
 	.probe = rockchip_drm_platform_probe,
 	.remove = rockchip_drm_platform_remove,
 	.driver = {
-		.owner = THIS_MODULE,
 		.name = "rockchip-drm",
 		.of_match_table = rockchip_drm_dt_ids,
 		.pm = &rockchip_drm_pm_ops,