The pci-bridge device is not usable on s390x, so introduce a Kconfig switch that allows to disable it. Message-ID: <20240913144844.427899-1-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>