vchiq_bulk_xfer_callback
ret = vchiq_bulk_xfer_callback(instance, handle, &bulk_params);
ret = vchiq_bulk_xfer_callback(instance, handle, &bulk_params);
status = vchiq_bulk_xfer_callback(instance, args->handle,
vchiq_bulk_xfer_callback(struct vchiq_instance *instance, unsigned int handle,