Code scrub DxeIpl to add back the CONST modifier and solve a typecast warning.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5516 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c

@@ -25,14 +25,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
    @param DxeCoreEntryPoint         The entrypoint of DxeCore.
    @param HobList                   The start of HobList passed to DxeCore.
-   @param EndOfPeiSignal            The PPI descriptor for EFI_END_OF_PEI_PPI.
 
 **/
 VOID
 HandOffToDxeCore (
   IN EFI_PHYSICAL_ADDRESS   DxeCoreEntryPoint,
-  IN EFI_PEI_HOB_POINTERS   HobList,
-  IN EFI_PEI_PPI_DESCRIPTOR *EndOfPeiSignal
+  IN EFI_PEI_HOB_POINTERS   HobList
   )
 {
   VOID                *BaseOfStack;
@@ -55,7 +53,7 @@ HandOffToDxeCore (
   //
   // End of PEI phase singal
   //
-  Status = PeiServicesInstallPpi (EndOfPeiSignal);
+  Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);
   ASSERT_EFI_ERROR (Status);
 
   //