am cefbbac4: hal: update EC reference handling

* commit 'cefbbac40220d4e7690d204eecff5f6ae3f63069':
  hal: update EC reference handling
tree: 948c44f1a82a7eedb4e1e12add86d472126820ae
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk