r600/sfn: always use four slots for Cayman trans ops
This is a partial revert of
ed6204eb0 (r600/sfn: only use 3 channels on Cayman for trans ops)
The scheduler and/or optimizer passes generate faulty code when
we use only three slots as decribed in the spec. So for now disable
this optimization.
Fixes:
ed6204eb0 (r600/sfn: only use 3 channels on Cayman for trans ops)
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7774
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20034>
(cherry picked from commit
28c7684eb9a898089844376193d8332b5f58f3d8)