V4L/DVB (3062): Fix wrong tuner.h define for tuner 46

- Fix wrong tuner.h define for tuner 46 (it's a Panasonic, not a Microtune).

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>