SecurityPkg: TcgDxe,Tcg2Dxe,TrEEDxe: New PCD for TCG event log and TCG2 final event...

TCG event log and TCG2 final event log area length can be configurable to meet platform event log
requirement.
PcdTcgLogAreaMinLen    : 0x10000  based on minimum requirement in TCG ACPI Spec 00.37
PcdTcg2FinalLogAreaLen : 0x8000   based on experience value

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>
Reviewed-by: Qin Long <qin.long@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19639 6f19259b-4bc3-4df7-8a09-765794883524