mailbox: 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: Krzysztof Kozlowski <[e-mail]>
Acked-by: Lee Jones <[e-mail]>
Reviewed-by: Eric Anholt <[e-mail]>
Signed-off-by: Jassi Brar <[e-mail]>

drivers/mailbox/bcm2835-mailbox.c

···
 static struct platform_driver bcm2835_mbox_driver = {
 	.driver = {
 		.name = "bcm2835-mbox",
-		.owner = THIS_MODULE,
 		.of_match_table = bcm2835_mbox_of_match,
 	},
 	.probe		= bcm2835_mbox_probe,