staging: octeon: Fix line over 80 characters

This patch fix the line over 80 characters warning that was detected
using checkpatch.pl script.

Fixes: 6fe5efa1 ('staging: octeon: Convert create_singlethread_workqueue()')
Cc: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>