[WifiCoex] Calculate UnsafeChannels on cell DL and override

Register CoexManager to listen on PhysicalChannelConfig changes and run
the coex algorithms on the DL channels and override list. UL channels
are not yet supported in PhysicalChannelConfig and will be added in a
later CL. This will only affect neighboring UnsafeChannels since
harmonic/intermod depend on the UL.

Bug: 153651001
Test: atest CoexManagerTest
Change-Id: If34e63393f4b0c1f05d8abc2094df8a77e9675c1
11 files changed
tree: d1c9058a8da0cfbe953052c27cfb16ab0dc7bd16
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg