Fix legacy failed unit test for BatteryInfoLoader

fix the legacy failed test since the scale is different, setting the
testing value in ms scale (getBatteryTimeRemainingMs()), but getting
the data in us scale (info.remainingTimeUs)

Bug: 188244142
Test: make SettingsRoboTests
Change-Id: Ib389976985eb3741cc96e0ee4a3a000c7f690b37
3 files changed