ci: Make a missing device name correctly bail out of deqp-runner.sh.

If your driver is totally broken and can't even report its name, let's
stop here instead of doing a CTS run full of failure to start tests and
reporting them all missing at the end.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6324>
1 file changed