Merge "Adding additional docs for OemNetworkPreferences" am: f13bcb0899

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1606593

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I947176ec2f71fcddb7bc432b23917eef219562f3
tree: 47fb23787ec49230367f39ea47c9b2ccf456c9d7
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS