Merge "BatteryStats: explicitly copy the wakeup reasons" am: da20982f89 am: bbba38fcd4 am: 2441c9905f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1508743

Change-Id: Ib8b0b5035bb4c3557852849ebff674985db7fb52