Merge "health: batteryStateOfHealth should be a property" into udc-dev am: 2d1878a0

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/21475918



Change-Id: I85ab0a87eefd0cb3561d468edf593877e1650261
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>