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/s2io.c b/drivers/net/s2io.c
index e72e0e0..c16f915 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -7233,7 +7233,7 @@
 
 int __init s2io_starter(void)
 {
-	return pci_module_init(&s2io_driver);
+	return pci_register_driver(&s2io_driver);
 }
 
 /**