REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4642 When use Mbedtls, there is a clang build error. Add dummy inttypes header to fix clang build. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Yi Li <yi1.li@intel.com> Cc: Guomin Jiang <guomin.jiang@intel.com> Signed-off-by: Wenxing Hou <wenxing.hou@intel.com> Reviewed-by: Yi Li <yi1.li@intel.com>