radv: Emit cache flushes before CP DMA.

The flushes could be due to TRANSFER barriers.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit cce43f6d8c40222099badaf52344d6a0eed993f3)
1 file changed