V4L/DVB (8046): zoran: i2c structure templates clean-up

Clean up the use of structure templates in zoran_card. For one thing,
a real template is supposed to be read-only. And in some cases it's
more efficient to initialize the few fields we need individually.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>