The driver entry point calls gDS->SetMemorySpaceAttributes(). This interface may return EFI_NOT_AVAILABLE_YET when CPU Arch protocol is not available. So we need to list CpuArch protocol in its INF dependency section. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>