radeonsi: don't assume that TC_ACTION_ENA invalidates L1 cache on gfx9
Just got into a midnight discussion with a hw guy. TC_ACTION_ENA apparently doesn't invalidate L1, so don't clear the INV_VCACHE flag. Fixes: 4056e953 - radeonsi: move emit_cache_flush functions into si_gfx_cs.c Reviewed-by:Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Reviewed-by:
Dave Airlie <airlied@redhat.com> Part-of: <mesa/mesa!17902> (cherry picked from commit 279315fd)