usb: ohci-sa1111: remove special sa1111 mmio accessors

Remove the special SA1111 MMIO accessors from the ohci-sa1111 driver
as their definition will be removed shortly.  The SA1111 accessors are
barrierless, so use the _relaxed variants.

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>