[media] hdpvr: small fixes

- return EBUSY instead of EAGAIN.
- add missing break.
- remove unnecessary buf type check (done by the core).

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed