REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3791 ExtendedImageRevision should be printed when Header revision >= 6. Cc: Maurice Ma <maurice.ma@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Signed-off-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>