usb: ohci-sa1111: convert shutdown method to native device_driver

Convert the shutdown method to use the device_driver shutdown function
pointer rather than a private bus-type shutdown.  This is the only user
for SA1111 bus types, so having the support code in the bus doesn't
make any sense.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-sa1111.c

@@ -247,8 +247,9 @@ static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev)
 	return 0;
 }
 
-static void ohci_hcd_sa1111_shutdown(struct sa1111_dev *dev)
+static void ohci_hcd_sa1111_shutdown(struct device *_dev)
 {
+	struct sa1111_dev *dev = to_sa1111_device(_dev);
 	struct usb_hcd *hcd = sa1111_get_drvdata(dev);
 
 	if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
@@ -261,9 +262,9 @@ static struct sa1111_driver ohci_hcd_sa1111_driver = {
 	.drv = {
 		.name	= "sa1111-ohci",
 		.owner	= THIS_MODULE,
+		.shutdown = ohci_hcd_sa1111_shutdown,
 	},
 	.devid		= SA1111_DEVID_USB,
 	.probe		= ohci_hcd_sa1111_probe,
 	.remove		= ohci_hcd_sa1111_remove,
-	.shutdown	= ohci_hcd_sa1111_shutdown,
 };