The special case of CS stateobjs can be shared across contexts/threads.
In all other cases, they are private to a single ctx, and it is safe to
make single-threaded assumptions when it comes to fast-paths.
See also commit b74a07a422 ("freedreno/a6xx: Avoid touching long lived
stateobj refcnt").
Signed-off-by: Rob Clark <rob.clark@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40352>
5e07201b7c