Remove RT attribute for variable PlatDriOver.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gao, Liming <liming.gao@intel.com>
Reviewed-by: Yao, Jiewen <jiewen.yao@intel.com>
Reviewed-by: Zeng, Star <star.zeng@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15401 6f19259b-4bc3-4df7-8a09-765794883524
Not to copy mailbox into new space when debug agent initialization for S3 Boot Script.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15402 6f19259b-4bc3-4df7-8a09-765794883524