hdhr: dont start_feed() if not yet tuned

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
tune: add virtual function get_name()

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
feed: dont forget to define filename in pull callback case

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
feed: display filename in destructor debug

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
tune: get_name() should be a const char *

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
serve: display tuner name during list_tuners()

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
hdhr_tuner: use hdhomerun_device_get_name() to handle get_name()

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>