Wifi fixes for RSSI offload.

1. When disconnecting, stop RSSI monitoring.
2. If no thresholds are specified, stop offload.
3. If invalid threholds are specified, stop offload.
3. When logging CMD_START_RSSI_MONITORING_OFFLOAD, include the
   thresholds as well.
5. Delete stopRssiMonitoring(), which is unused.
6. Minor code and logging simplification.

Bug: 21405941
Bug: 23679346
Bug: 23815756
Change-Id: Iddbd2d3c6a3e2a8f1b283fbe5b41e3e4e3acbfa1
1 file changed
tree: 124a65c064f5f80576dafdfb9271252eab95db8e
  1. service/