Bluetooth: Introduce BTC Service

Introduce the BTC Service which listen to the Bluetooth
related events and send those events to the connected client.
BT-WLAN coex module would connect to this socket as client and listen
to BT related events

Change-Id: Ic8223d6c761bb9e64ce94b83b2a947c1ad87b1d4

Conflicts:
	Android.mk
	AndroidManifest.xml