EDKII_SERIAL_PORT_LIB_VENDOR_GUID is now defined in MdeModulePkg, simply use it. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Message-Id: <20190606131459.1464-5-anthony.perard@citrix.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>