UefiCpuPkg/SecCore: Support EFI_PEI_CORE_FV_LOCATION_PPI

UefiCpuPkg/SecCore: Support EFI_PEI_CORE_FV_LOCATION_PPI

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1524

EFI_PEI_CORE_FV_LOCATION_PPI may be passed by platform
when PeiCore not in BFV so SecCore has to search PeiCore
either from the FV location provided by
EFI_PEI_CORE_FV_LOCATION_PPI or from BFV.

Test: Verified on internal platform and booting successfully.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>