[automerger skipped] Allow batteryChargeTimeToFullNowSeconds to be -1 am: 30b54c45b7 -s ours

am skip reason: Merged-In I18fb11bb0a2233a9a89183a5f9ecf597e7719172 with SHA-1 c2dc510a0a is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1437293

Change-Id: I7cd3759b2d873c06522df8389e20e1e84b1e8e85