Merge "memtrack: Update AIDL memtrack hal documentation" am: 55305df1ff am: be53a67a77 am: f45ed3eac4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1751681

Change-Id: I220ddec7d7e7c7b13a8f5bf444b03dc56da27c8e