drm/etnaviv: move job context pointer to etnaviv_gem_submit

The context isn't really related to the cmdbuf, but is a property of
the job. This has been missed when moving to a properly refcounted
etnaviv_gem_submit.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

drivers/gpu/drm/etnaviv/etnaviv_gem.h

@@ -95,6 +95,7 @@ struct etnaviv_gem_submit_bo {
 struct etnaviv_gem_submit {
 	struct drm_sched_job sched_job;
 	struct kref refcount;
+	struct etnaviv_file_private *ctx;
 	struct etnaviv_gpu *gpu;
 	struct dma_fence *out_fence, *in_fence;
 	int out_fence_id;