Some headsets when acting as initiators of an AVDTP connection create
the AVDTP signaling channel but don't do anything else over it (i.e.
they expect us to set up a stream when needed). This patch makes
bluetoothd do the same as AudioSink.Connect() if no AVDTP commands have
been received from the sink within one second after it has created the
AVDTP signaling channel to us.
Setting up a stream is also important because the AudioSink Connected
property is bound to the existence of a configured stream (which makes
sense since an AVDTP connection as such tells us nothing about what
sinks and sources there are or even if audio or video will be used).
