WifiController: activate SoftApMode in WSMP

Allow WifiController to enter SoftApMode via the WifiStateMachinePrime
impl instead of the WifiStateMachine impl.  Note:  WifiStateMachine will
shadow WifiStateMachinePrime to handle API calls, but will not be
managing the mode.

Bug: 31830541
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Test: wifi integration tests
Test: manual testing from Settings and QS
Test: related wifi CTS tests
Change-Id: I9a24393ff5625734c785599eba2aed61a886ba26
7 files changed