SoundTriggerDetector should look at the return code to honour success

The SoundTriggerDetector calls to start/stop recognition should also
check what the return code from the SoundTriggerService are saying -
otherwise it looks like recognition has started when there's been a
problem.

Change-Id: Icd6d2ab5ec30a5ffe66082311a77cca376a37148
1 file changed