0531f61376
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3833 Add BaseFspDebugLibSerialPort Support for X64. Cc: Chasel Chiu <chasel.chiu@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Cc: Ashraf Ali S <ashraf.ali.s@intel.com> Cc: Ted Kuo <ted.kuo@intel.com> Signed-off-by: Ted Kuo <ted.kuo@intel.com> Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>