drm/ci: meson: add tests for meson display driver

For Amlogic Meson G12B (A311D) SOC the display driver is meson and
gpu driver is panfrost. Currently, in drm-ci for Meson G12B (A311D),
only the gpu driver is tested. Refactor the existing meson jobs
and add support in drm-ci to test both display and gpu driver for
Amlogic Meson G12B (A311D) and update xfails.

Since the correct driver name is passed from the job to test gpu
and display driver, remove the check to set IGT_FORCE_DRIVER
based on driver name for meson jobs.

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