V4L/DVB (3388): Ignore DiSEqC messages > 6 and < 3

Ignore invalid messages on cx24110 frontend.
Thanks to Edgar Toernig

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
1 file changed