Merge "[Android T][MEP]: HAL changes for MEP feature" am: d45fd704fe am: 7ab5066b55 am: 8dd67c7184 am: c09b62b380 am: 1cef1a3aee

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1839796

Change-Id: I804c3a9226885af7f8fbdb270cbc4979f1466d57