gitlab-ci: Restrict s390x/ppc64el jobs to packet runners

They are hitting timeouts on the gstreamer runners now... *sigh*

Reviewed-by: Adam Jackson <ajax@redhat.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4233>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4233>
1 file changed