Use a unique bus/device/function if a bay trail LPC bridge was found. TEST=Run on MinnowBoard MAX Turbot and customer's LynxPoint-LP. Change-Id: Ib4b50aaf9817ac94f46c28925081540676226d84 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/17464 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>