REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3149 Address MEM64 BAR in type unknown if sizing fail in high 32bit. Cc: Ray Ni <ray.ni@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Signed-off-by: Zarcd Zhong <zarcd.zhong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>