drm/ci: add farm variable

Mesa uses structured logs for logging and debug purpose,
https://mesa.pages.freedesktop.org/-/mesa/-/jobs/59165650/artifacts/results/job_detail.json



Since drm-ci uses the mesa scripts, add the farm variable
and update the device type for missing jobs.

Signed-off-by: Vignesh Raman <vignesh.raman@collabora.com>