Chrome Version: 61.0.3119.0

What steps will reproduce the problem?
(1) build kernel from this commit https://chromium-review.googlesource.com/c/528021/
(2) Load onto Max98090 based baytrail device
(3) Turn up speakers and play audio
(4) Plug in headphones

What is the expected result?
Speakers will turn off

What happens instead?
Speakers remain on while audio plays through headphones