Headset jack events emit 2 events: 'Headset Microphone Jack'
and 'Headphone Jack'. These were properly detected before,
but not headphone jack events only: 'Headphone Jack'.
This change allows to detect headphone jack events as well
and act on these events by setting the headphones as
default audio output while keeping the internal
microphone as audio input. For headsets,
the microphone is switched to the headset microphone as well.
Dylan Van Assche