net: ec_bhf: Use module_pci_driver

Use module_pci_driver for drivers whose init and exit functions
only register and unregister, respectively.

A simplified version of the Coccinelle semantic patch that performs
this transformation is as follows:

@a@
identifier f, x;
@@
-static f(...) { return pci_register_driver(&x); }

@b depends on a@
identifier e, a.x;
@@
-static e(...) { pci_unregister_driver(&x); }

@c depends on a && b@
identifier a.f;
declarer name module_init;
@@
-module_init(f);

@d depends on a && b && c@
identifier b.e, a.x;
declarer name module_exit;
declarer name module_pci_driver;
@@
-module_exit(e);
+module_pci_driver(x);

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ec_bhf.c

@@ -604,19 +604,7 @@ static struct pci_driver pci_driver = {
 	.probe		= ec_bhf_probe,
 	.remove		= ec_bhf_remove,
 };
-
-static int __init ec_bhf_init(void)
-{
-	return pci_register_driver(&pci_driver);
-}
-
-static void __exit ec_bhf_exit(void)
-{
-	pci_unregister_driver(&pci_driver);
-}
-
-module_init(ec_bhf_init);
-module_exit(ec_bhf_exit);
+module_pci_driver(pci_driver);
 
 module_param(polling_frequency, long, S_IRUGO);
 MODULE_PARM_DESC(polling_frequency, "Polling timer frequency in ns");