WifiScanningService: Process getAvailableChannels on main thread

Ensure that we process the incoming API call in the wifi scanner service
thead (and not in the caller's thread).

Bug: 148571383
Test: atest com.android.server.wifi.scanner
Change-Id: I1c3da844a3ec4256ea3e2e03e640fa55f690e8df
3 files changed
tree: 82b98b6e1b9b5614fb9d7c676853095215998617
  1. apex/
  2. service/
  3. PREUPLOAD.cfg