Fix the notification of low latency mode changes

Wifi low latency lock sets the low latency mode if the Wifi chip
supports low latency capability. Currently low latency lock listener
is notified only if the chip supports low latency mode.

If the chip is not supporting low latency mode, Wifi low latency lock
can still disable the chip power save. Notify the low latency listener
even in this case.

Bug: 288516839
Test: atest com.android.server.wifi
Change-Id: If12ec1704fa87612ebacf24aaa46fe64b29b458c
2 files changed