gpio: 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: Wolfram Sang <wsa@the-dreams.de>

drivers/gpio/gpio-grgpio.c

@@ -490,7 +490,6 @@ MODULE_DEVICE_TABLE(of, grgpio_match);
 static struct platform_driver grgpio_driver = {
 	.driver = {
 		.name = "grgpio",
-		.owner = THIS_MODULE,
 		.of_match_table = grgpio_match,
 	},
 	.probe = grgpio_probe,