Rename Wifi threads to reduce confusion

- Renamed WifiCoreHandlerThread -> WifiHandlerThread.
- Renamed WifiServiceHandlerThread -> AsyncChannelHandlerThread.

Bug: 138403307
Test: ./tests/wifitests/runtests.sh
Test: turns on and connects to Wifi
Change-Id: I9e8481af288533eb07ebbe12bba5ee80670fd9c6
5 files changed
tree: 7b0240bcfe0f6f6af79b9be68ca808a65037a70e
  1. service/
  2. PREUPLOAD.cfg