Bluetooth: Fix PXP LPP app link loss reconnection

When BLE link loss reconnection happens,the host is
not able to send Vendor specific commands
to the controller to start monitoring the RSSI
values.

CRs-fixed: 597822

Change-Id: I436889fae7f7d42c4f532690b726271ffc136e94

Conflicts:
	core/java/android/bluetooth/BluetoothLwPwrProximityMonitor.java