freedreno/a6xx: Do tex-state invalidates in same ctx

freedreno/a6xx: Do tex-state invalidates in same ctx

If a resource invalidate is triggered by a different ctx (potentially on
a different thread) simply flag that the tex state needs invalidation,
but defer handling it to the ctx that owns the tex state.

This will let us remove atomic refcnt'ing on the tex state, and more
importantly atomic refcnt'ing on the fd_ringbuffer (as this was the one
special case where rb's could be accessed from multiple threads).

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21274>