Remove Uefi.h, which includes UefiSpec.h, and change the return value to match the RETURN_STATUS type. Contributed-under: TianoCore Contribution Agreement 1.1 Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen (Intel address) <jordan.l.justen@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>