audio: Fix for camcorder shutter playback issue on BT

- Shutter sound is not played for BT when starting
  camcorder recording
- Duplicate tracks in audio flinger are invalidating on
  music stream as a part of record playback concurrency on Bear.
  This results duplicate tracks to change non active state and
  subsequently not accepting any PCM data for subsequent
  playback
- Do not call invalidate for duplicate tracks using
  AUDIO_STREAM_PATCH stream type

Change-Id: Ib6f46bacd70da5de5958f65d921c7c219a5b0dc1