parisc/superio: Use module_pci_driver to register driver

Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/parisc/superio.c

@@ -494,15 +494,4 @@ static struct pci_driver superio_driver = {
 	.probe =        superio_probe,
 };
 
-static int __init superio_modinit(void)
-{
-	return pci_register_driver(&superio_driver);
-}
-
-static void __exit superio_exit(void)
-{
-	pci_unregister_driver(&superio_driver);
-}
-
-module_init(superio_modinit);
-module_exit(superio_exit);
+module_pci_driver(superio_driver);