turnip: hook up cmdbuffer event set/wait

Gets some basic tests under "dEQP-VK.synchronization.*event*" passing

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3123>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3123>
1 file changed