Merge branch vanilla into r2.0_00018.0

* ssh://ch-git3.arimacomm.com.tw:29418/kernel/msm-4.9:
  Implement AB partition on Android Q
  Merge audio function from 8901_P.
  Enable step-charging for Kayo battery
  To fix phone can not charge fully
  Camera kernel patching from P codebase

Change-Id: I6a624e32d73de029245a4f7d96d2b88855809b5b