vfio/fsl-mc: Use module_fsl_mc_driver macro to simplify the code

Use the module_fsl_mc_driver macro to simplify the code and
remove redundant initialization owner in vfio_fsl_mc_driver.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230809131536.4021639-1-lizetao1@huawei.com


Signed-off-by: Alex Williamson <alex.williamson@redhat.com>