include/sound: export audio_effects.h

* With a recent change to msm8974-common we ned to export this

Change-Id: I569e437e9f965cd2ede6b7a384481e25d222b085
Merge remote-tracking branch 'cm/cm-11.0' into HEAD
Revert "include/sound: export audio_effects.h"

This reverts commit 0ee97fab487ab33fe79a3b476597a970ebfc9a0d.