etnaviv/drm: fix evil-twin etna_drm_table_lock

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7832>
(cherry picked from commit aad0c7c6b8e73141f5dd5aed0c091efd5dba5b99)
4 files changed