[media] dvb_usb_v2: refactor delayed init

Move work to the struct dvb_usb_device that we can access
it inside .disconnect().

Also many other minor changes.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2 files changed