[media] b2c2: fix spelling mistake: "Contunuity" -> "Continuity"

trivial fix to spelling mistake in deb_chk message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>