Since we will be dropping the definition of MAX_UINTN, whose meaning is ambiguous for the BaseTools, add a definition of MAX_UINT32 that we can switch to. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Liming Gao <liming.gao@intel.com>