radv: emit COMPUTE_PIPELINESTAT_ENABLE for CS invocations on ACE

radv: emit COMPUTE_PIPELINESTAT_ENABLE for CS invocations on ACE

This register seems needed to enable compute shader shader invocations
on GFX7. On GFX8+ it's working fine without emitting this register but
I think it doesn't hurt.

This fixes dEQP-VK.query_pool.statistics_query.*_cq on GFX7.

Fixes: a9945216ba2 ("radv: fix COMPUTE_SHADER_INVOCATIONS query on compute queue")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25957>
(cherry picked from commit 17daa08dff0cf9479b27ed7402de61336607ec10)