MdeModulePkg PeiCore: Handle notification PPI from SEC

InstallPpi() will be used for normal PPI in PPI list from SEC,
and NotifyPpi() will be used for notification PPI in PPI list from SEC.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

MdeModulePkg/Core/Pei/PeiMain.h

@@ -557,6 +557,20 @@ DispatchNotify (
   IN INTN                NotifyStopIndex
   );
 
+/**
+  Process PpiList from SEC phase.
+
+  @param PeiServices    An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
+  @param PpiList        Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
+                        These PPI's will be installed and/or immediately signaled if they are notification type.
+
+**/
+VOID
+ProcessPpiListFromSec (
+  IN CONST EFI_PEI_SERVICES         **PeiServices,
+  IN CONST EFI_PEI_PPI_DESCRIPTOR   *PpiList
+  );
+
 //
 // Boot mode support functions
 //