SecurityPkg/dsc: Add PCD for Laml, Lasa for TPM2.

SecurityPkg/dsc: Add PCD for Laml, Lasa for TPM2.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=978

Those PCDs will be used for TPM2 ACPI table.
Tcg2Dxe need produce those for event log address.
Tcg2Smm need consume those to fill TPM2 ACPI table.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>