drm/ttm: drop persistent_swap_storage from ttm_bo_init and co

Never used as parameter, the only driver actually using this is nouveau
and there it is initialized after the BO is initialized.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/virtio/virtgpu_object.c

@@ -89,7 +89,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 	virtio_gpu_init_ttm_placement(bo, pinned);
 
 	ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, size, type,
-			  &bo->placement, 0, !kernel, NULL, acc_size,
+			  &bo->placement, 0, !kernel, acc_size,
 			  NULL, NULL, &virtio_gpu_ttm_bo_destroy);
 	/* ttm_bo_init failure will call the destroy */
 	if (ret != 0)