Change "packet" to "packed" where the doc is talking about packed data
formats.
Signed-off-by: NAntonio Ospite <ospite@studenti.unina.it>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>