drivers/net: Remove deprecated use of pci_module_init()

From: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>

Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index a31544c..26040ab 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -5245,7 +5245,7 @@
 	else
 		link_transition_timeout = 0;
 
-	return pci_module_init(&cas_driver);
+	return pci_register_driver(&cas_driver);
 }
 
 static void __exit cas_cleanup(void)