mailbox: pcc: fix platform_no_drv_owner.cocci warnings

./drivers/mailbox/pcc.c:580:3-8: No need to set .owner here. The core
will do it.

Remove .owner field if calls are used which set it automatically

Reported-by: Abaci Robot <[e-mail]>
Signed-off-by: Yang Li <[e-mail]>
Signed-off-by: Jassi Brar <[e-mail]>

drivers/mailbox/pcc.c

···
 	.probe = pcc_mbox_probe,
 	.driver = {
 		.name = "PCCT",
-		.owner = THIS_MODULE,
 	},
 };