Fix gcc build breaks.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@295 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/Library/PcdLib.h

@@ -450,7 +450,7 @@ EFIAPI
 LibPcdSetPtr (
   IN PCD_TOKEN_NUMBER  TokenNumber,
   IN UINTN             SizeOfBuffer,
-  IN CONST VOID        *Value
+  IN VOID              *Value
   );
 
 
@@ -580,7 +580,7 @@ LibPcdSetExPtr (
   IN CONST GUID        *Guid,
   IN PCD_TOKEN_NUMBER  TokenNumber,
   IN UINTN             SizeOfBuffer,
-  IN CONST VOID        *Value
+  IN VOID              *Value
   );