ALSA: pci: clean up using module_pci_driver()

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/als300.c b/sound/pci/als300.c
index 8196e22..59d6538 100644
--- a/sound/pci/als300.c
+++ b/sound/pci/als300.c
@@ -852,7 +852,7 @@
 	return 0;
 }
 
-static struct pci_driver driver = {
+static struct pci_driver als300_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_als300_ids,
 	.probe = snd_als300_probe,
@@ -863,15 +863,4 @@
 #endif
 };
 
-static int __init alsa_card_als300_init(void)
-{
-	return pci_register_driver(&driver);
-}
-
-static void __exit alsa_card_als300_exit(void)
-{
-	pci_unregister_driver(&driver);
-}
-
-module_init(alsa_card_als300_init)
-module_exit(alsa_card_als300_exit)
+module_pci_driver(als300_driver);