Merge "Update doc for audio-coupled-haptic related stuff." am: fe752fc2b4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2142192

Change-Id: I3f5cfa8f028fba4807a95834920737b68dd73dd5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>