PurleyOpenBoardPkg: Add BoardMtOlympus

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Mike Kinney <michael.d.kinney@intel.com>
Cc: Isaac Oram <isaac.w.oram@intel.com>
Cc: Mohamed Abbas <mohamed.abbas@intel.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Cc: Zachary Bobroff <zacharyb@ami.com>
Cc: Harikrishna Doppalapudi <harikrishnad@ami.com>
Signed-off-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
Reviewed-by: Isaac Oram <isaac.w.oram@intel.com>