Add description of ENOLINK error
Signed-off-by: NHelen Mae Koike Fornazier <helen.koike@collabora.co.uk>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>