Merge the PI enabling works from the branch

First round of PI enabling work:
1) PiPeiCis changes (CONST, EFI_PEI_FILE_HANDLE.. etc)
2) Make use of FirmwareVolume 2 protocol.
3) Verified for Nt32Pkg and real platform for S3.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3773 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/MemoryTest/BaseMemoryTestPei/BaseMemoryTest.c

@@ -20,6 +20,7 @@ Abstract:
 --*/
 
 #include <BaseMemoryTest.h>
+#include <Library/PeiServicesLib.h>
 
 static PEI_BASE_MEMORY_TEST_PPI mPeiBaseMemoryTestPpi = { BaseMemoryTest };
 
@@ -51,11 +52,9 @@ Returns:
 
 --*/  
 {
-  EFI_STATUS  Status;
 
-  Status = (**PeiServices).InstallPpi (PeiServices, &PpiListPeiBaseMemoryTest);
-
-  return Status;
+  return PeiServicesInstallPpi (&PpiListPeiBaseMemoryTest);
+  
 }
 
 EFI_STATUS

MdeModulePkg/Universal/MemoryTest/BaseMemoryTestPei/BaseMemoryTestPei.inf

@@ -39,6 +39,7 @@
   ReportStatusCodeLib
   PeimEntryPoint
   DebugLib
+  PeiServicesLib
 
 [Ppis]
   gPeiBaseMemoryTestPpiGuid                     # PPI ALWAYS_PRODUCED

MdeModulePkg/Universal/PcatSingleSegmentPciCfg2Pei/PciCfg2.c

@@ -364,7 +364,7 @@ PeimInitializePciCfg (
   ASSERT ((**PeiServices).Hdr.Revision >= PEI_SERVICES_REVISION);
 
   (**PeiServices).PciCfg = &gPciCfg2Ppi;
-  Status = (**PeiServices).InstallPpi (PeiServices, &gPciCfg2PpiList);
+  Status = (**PeiServices).InstallPpi ((CONST EFI_PEI_SERVICES **)PeiServices, &gPciCfg2PpiList);
 
   return Status;
 }

MdeModulePkg/Universal/Variable/Pei/Variable.c

@@ -64,7 +64,7 @@ Returns:
   //
   // Publish the variable capability to other modules
   //
-  return (**PeiServices).InstallPpi (PeiServices, &mPpiListVariable);
+  return (**PeiServices).InstallPpi ((CONST EFI_PEI_SERVICES **)PeiServices, &mPpiListVariable);
 
 }