SecurityPkg/Tcg2Smm: Correct function parameter attribute

SecurityPkg/Tcg2Smm: Correct function parameter attribute

Correct UpdatePossibleResource parameter attribute to align to comment

Change-Id: Id8f8be975f0e8666573decc3fbaaf326b7767ba8
Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Long Qin <qin.long@intel.com>
Cc: Yao Jiewen <jiewen.yao@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Zhang, Chao B <chao.b.zhang@intel.com>
Reviewed-by: Long Qin <qin.long@intel.com>