Fixed the display count of connected panu device.

Root cause: Bluez relies on the count of activated pan network
interfaces to show how many panu devices are connected. But
Bluedroid has only one shared pan network interface for any
number of connected panu devices.

Change-Id: I52e3d6d79e2f1b9f8afab1d70c9ff1eca3ef2349
1 file changed