[media] gspca - sonixj: Remove magic numbers for delay

The number 0xdd is used for marking delay init sequence steps.
Replace 0xdd values only if the meaning is delay.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>