USB: ohci-hub: Mark ohci_finish_controller_resume() as __maybe_unused

ohci_finish_controller_resume() is intended to be used in platform specific
drivers ohci-*.c, included from ohci-hcd.c. Some of them don't actually use
ohci_finish_controller_resume(), so mark it as __maybe_unused.
Signed-off-by: NRoland Stigge <stigge@antcom.de>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-hub.c

@@ -317,7 +317,7 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
 }
 
 /* Carry out the final steps of resuming the controller device */
-static void ohci_finish_controller_resume(struct usb_hcd *hcd)
+static void __maybe_unused ohci_finish_controller_resume(struct usb_hcd *hcd)
 {
 	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
 	int			port;