greybus: camera: Fix size of configure_streams(0)

When APB-A CSI-Tx configuration fails, it is necessary to unconfigure
the camera module issuesing a 0 stream configuration request.
Fix size of request and response to avoid Greybus core complain about
Response size differences.

Testing Done: Triggering the error condition after APB-A CSI-tx
              configuration does not make Greybus core complain anymore
Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>

drivers/staging/greybus/camera.c

@@ -468,7 +468,8 @@ static int gb_camera_configure_streams(struct gb_camera *gcam,
 			memset(req, 0, sizeof(*req));
 			gb_operation_sync(gcam->connection,
 					  GB_CAMERA_TYPE_CONFIGURE_STREAMS,
-					  req, req_size, resp, resp_size);
+					  req, sizeof(*req),
+					  resp, sizeof(*resp));
 			*flags = 0;
 			*num_streams = 0;
 			goto done;