drm/i915/selftests: Fixup a couple of missing serialisation with vma

In commit 70d6894d ("drm/i915: Serialize against vma moves")
I managed to miss a couple of i915_vma_move_to_active() that had not
serialised against an async vma pinning. Add the missing
i915_request_await.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190821193851.18232-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/selftests/i915_request.c

@@ -994,6 +994,8 @@ static int live_sequential_engines(void *arg)
 		request[id]->batch = batch;
 
 		i915_vma_lock(batch);
+		err = i915_request_await_object(request[id], batch->obj, false);
+		if (err == 0)
 			err = i915_vma_move_to_active(batch, request[id], 0);
 		i915_vma_unlock(batch);
 		GEM_BUG_ON(err);

drivers/gpu/drm/i915/selftests/igt_spinner.c

@@ -78,6 +78,9 @@ static int move_to_active(struct i915_vma *vma,
 	int err;
 
 	i915_vma_lock(vma);
+	err = i915_request_await_object(rq, vma->obj,
+					flags & EXEC_OBJECT_WRITE);
+	if (err == 0)
 		err = i915_vma_move_to_active(vma, rq, flags);
 	i915_vma_unlock(vma);