Add definition for EFI_FIRMWARE_CONTENTS_SIGNED_GUID.

Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14669 6f19259b-4bc3-4df7-8a09-765794883524
MdeModulePkg: Add support for weakly aligned FVs.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14671 6f19259b-4bc3-4df7-8a09-765794883524
Create PCDs in MdeModulePkg for ACPI table OEM_ID/OEM_TABLE_ID/OEM_REVISION/CREATOR_ID/CREATOR_REVISION customization.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14672 6f19259b-4bc3-4df7-8a09-765794883524
Merge branch 'master' of https://github.com/tianocore/edk2