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

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

Change-Id: Ia6e96b70147974f5184e303ed71c838250ce35fa