0edb7ec5ce
RootBridgeIo.PollMem()/PollIo() originally don't count the IO/MMIO access overhead when delaying. The patch changes the implementation to count the access overhead so that the actually delay equals to user required delay. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Cc: Chasel Chiu <chasel.chiu@intel.com>