V4L/DVB (10344): gspca - ov534: Disable the Hercules webcams.

The Hercules webcam based on ov534 use different sensor than Playstation Eye,
disable them until full support is provided.

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>