ide: use unique names for struct pci_driver instances

Noticed-by: Russell King <rmk+lkml@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index a06c03f..a909684 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -444,7 +444,7 @@
 };
 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
 
-static struct pci_driver driver = {
+static struct pci_driver piix_pci_driver = {
 	.name		= "PIIX_IDE",
 	.id_table	= piix_pci_tbl,
 	.probe		= piix_init_one,
@@ -456,12 +456,12 @@
 static int __init piix_ide_init(void)
 {
 	piix_check_450nx();
-	return ide_pci_register_driver(&driver);
+	return ide_pci_register_driver(&piix_pci_driver);
 }
 
 static void __exit piix_ide_exit(void)
 {
-	pci_unregister_driver(&driver);
+	pci_unregister_driver(&piix_pci_driver);
 }
 
 module_init(piix_ide_init);