health: batteryStateOfHealth should be a property am: 39c564112b am: 2625f103ea am: 93a2e5cbf3

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2441528

Change-Id: I1164e5e0af030c68eb70ed1170d4f29fdc856a5e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>