Adds missing Bluetooth as network type.
Adds missing Bluetooth as network type.

The network connection type for Bluetooth is added so
that it is possible to use Bluetooth as Hotspot during
download from the Internet.

Change-Id: If8e8a3f69821beef742bc91d7a292a091861b48b

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base