panfrost: Add tentative bifrost_texture_descriptor
It looks very similar to the Midgard texture descriptor, just with a
bunch of fields moved around and the whole descriptor flattened (so
basically just memory access optimizations, from what I can tell).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4680>