ci/zink: restore full premerge testing on Adreno 618
What does this MR do and why?
ci/zink: restore full premerge testing on Adreno 618
Partial revert of: 68e8e4016385 ("ci/zink: reduce premerge testing on a618 to ~ 12 minutes")
Weston is kept, and reduction to the 2 devices, because we have only 9
at maximum capacity availabe (with 3 parallel jobs we would need at least 10)
Signed-off-by: David Heidelberg <david.heidelberg@collabora.com>