Make DxeIpl "assembly-free" to avoid the undesired LongMode.obj code in image even if we do not choose to switch to long mode.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2031 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c

@@ -34,7 +34,7 @@ Abstract:
 
 #include "VirtualMemory.h"
 
-EFI_PHYSICAL_ADDRESS
+UINTN
 CreateIdentityMappingPageTables (
   VOID
   )
@@ -155,6 +155,6 @@ Returns:
        );
   }
 
-  return (EFI_PHYSICAL_ADDRESS) (UINTN)PageMap; // FIXME
+  return (UINTN)PageMap; // FIXME
 }