The StandaloneMmPkg .DSC file went out of sync with the changes applied to the package when I enabled this code on the Synquacer platform in edk2-platforms. So apply the necessary changes to make this package build in isolation. Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Build-tested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>