Merge "Allow batteryChargeTimeToFullNowSeconds to be -1" am: 4e2d45ba53 am: 0d35a17357 am: 0a09e17cc1

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1436094

Change-Id: Ic6f5360566681967bfb589340ce85789d5534ecb