tree bd3aff36a1169705b561944c22961a40769a18f1
parent e01a616d913892271d3ed25cb0bb6a938ad245f4
author Santos Cordon <santoscordon@google.com> 1410396598 -0700
committer Santos Cordon <santoscordon@google.com> 1410484016 -0700

Implement the short-burst DTMF tones for CDMA calls.

Changes:
- Add code to respect "burst" mode dtmf
  - includes adding code to read when radio has completed the dtmf tone
    and adding a queue of incoming dtmf presses while a dtmf tone is in
    progress.
- Add a config overlay for mcc311/mnc480 to enable the setting in
  dialer.

Bug: 17431108
Change-Id: Icf1ec86ab54783e04b37104f6f3c327b959c4c0b