Don't manipulate driver state from WifiController

After this change, all states related to driver state are noops
in the WifiStateMachine.  They will be removed in the following change.

Bug: 30764863
Test: unittests pass on bullhead and upcoming devices
Test: WiFi continues to be able to connect/disconnect on bullhead

Change-Id: Ife8bb2d57a300350749d920ff89dee12ad86d310
4 files changed
tree: a16aa44c47aa823dbee39e51e318bf12a65e383b
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/