bcm63xx_enet: Remove redundant initialization owner

The platform_register_drivers() will set "THIS_MODULE" to driver.owner when
register a platform_driver driver, so it is redundant initialization to set
driver.owner in the statement. Remove it for clean code.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Link: https://lore.kernel.org/r/20230808014702.2712699-1-lizetao1@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>