Changes include: 1. Remove extra white space at the end of line. 2. Add comments for the new add function parameter. 3. Update IN OUT tag for function parameter. Cc: Dandan Bi <dandan.bi@intel.com> Cc: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>