merrifield: added board-vp support for SSP UART

merrifield: added board-vp support for SSP UART

BZ: 25983

There are special requirements for tangier simulation:
DMA is disabled
PCI capability ADID value (Bus number) is wrong in simulator

SFI entry needs to be overridden

Change-Id: I7a1c27d2898ec8bb962999c7f21b8f85ca1911e3
Signed-off-by: Mark F. Brown <mark.f.brown@intel.com>
Reviewed-on: http://android.intel.com:8080/37364
Reviewed-by: Ng, Cheon-woei <cheon-woei.ng@intel.com>
Tested-by: Ng, Cheon-woei <cheon-woei.ng@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>