panfrost: Allow 3D AFBC on Bifrost v7

This feature doesn't seem to work properly on Midgard, and is flagged
as unsupported on Bifrost v6.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <!8125>
41 jobs for !8125 with bifrost-afbc in 9 minutes and 44 seconds (queued for 2 seconds)
merge request