net: ethernet: broadcom: 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 <[e-mail]>

drivers/net/ethernet/broadcom/bcmsysport.c

···
 	.remove	= bcm_sysport_remove,
 	.driver =  {
 		.name = "brcm-systemport",
-		.owner = THIS_MODULE,
 		.of_match_table = bcm_sysport_of_match,
 		.pm = &bcm_sysport_pm_ops,
 	},

drivers/net/ethernet/broadcom/sb1250-mac.c

···
 	.remove = __exit_p(sbmac_remove),
 	.driver = {
 		.name = sbmac_string,
-		.owner  = THIS_MODULE,
 	},
 };