UefiCpuPkg/CpuMpPei: Produce EDKII_PEI_MP_SERVICES2_PPI.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1973

Produce new EDKII_PEI_MP_SERVICES2_PPI service.

It includes all APIs existed in EFI_PEI_MP_SERVICES_PPI
and add new API EDKII_PEI_MP_SERVICES_STARTUP_ALL_CPUS.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Chandana Kumar <chandana.c.kumar@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>

UefiCpuPkg/CpuMpPei/CpuMpPei.inf

@@ -26,6 +26,7 @@
   CpuMpPei.c
   CpuBist.c
   CpuPaging.c
+  CpuMp2Pei.c
 
 [Packages]
   MdePkg/MdePkg.dec
@@ -54,6 +55,7 @@
   gEfiSecPlatformInformation2PpiGuid
   gEfiVectorHandoffInfoPpiGuid                  ## SOMETIMES_CONSUMES
   gEfiPeiMemoryDiscoveredPpiGuid                ## CONSUMES
+  gEdkiiPeiMpServices2PpiGuid                   ## PRODUCES
 
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrMask    ## CONSUMES