Telephony: DataProfile priorities/arbitration

* Add flag to disable MPDN support
* Introduce priorities for different APN Types
* Create data calls in a prioritized order, tearing
  down lower priority calls if required.

Change-Id: I5f54eaa7a9af54c59c199c2f8e83d3435166e8c3
(cherry picked from commit 4ea88c27365749994164b42c7eb6b2b780ac1a00)
(cherry picked from commit 19c7f8bb3e9c4101083d585cad526265c7fc2b42)
(cherry picked from commit 7e3f0d5f506b54b46a174af047222a6a1e8c339d)