V4L/DVB (10208): zoran: Re-adds udev entry removed by changeset 60b4bde4

Changeset 60b4bde48b36c0315ef41fd38c339b9c7e68c46f removed an unused
struct on zoran driver, when compiled with "Y".

However, as pointed by Jean Delvare <khali@linux-fr.org>, this is
neeeded when the driver is compiled as a module, since udev relies on it
to auto-load the module.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>