OvmfPkg: Add PCDs for LAML/LASA field in CC EVENTLOG ACPI table

OvmfPkg: Add PCDs for LAML/LASA field in CC EVENTLOG ACPI table

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3853

Add PCDs to records LAML/LASA field in CC EVENTLOG ACPI table.

Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Ken Lu <ken.lu@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>