Implement enum_dv_presets in tvp7002.
Signed-off-by: NMats Randgaard <mats.randgaard@tandberg.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>