net: ethernet: 8390: ne2k-pci: use module_pci_driver() macro

The driver init/exit() function don't do anything special, it
can use the module_pci_driver() macro to eliminate boilerplate
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230810014633.3084355-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>