Merge changes from topic 'oreolo' into android-8.0

* changes:
  sepolicy: nuke uncompatible policies for O bringup
  common: switch to PRODUCT_DEFAULT_PROPERTY_OVERRIDES
tree: a7743cdcada6a0a28ca903aba979f11aa2c4efe7
  1. build/
  2. charger/
  3. config/
  4. overlay/
  5. prebuilt/
  6. sepolicy/
  7. utils/
  8. Android.mk