IStats HAL: Updated AIDL to version 2 am: 5540ebc0cc am: cabb2adfcc

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2339179

Change-Id: I33eafb9ed985ac13e7972ae32301d504c795a075
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>