Added configuration for VT downgrade/tear down when data disabled

Added a new flag that allows carriers to ignore data disabled
(e.g. data reaches limit or user disables data) so VT calls
will not be downgraded/torn down and VT service will not be
disabled.

Test: telephony unit tests
bug: 32880745
Change-Id: I8d3675e7df5972a05b35f1231f287c0dba8e9468
1 file changed
tree: ff8880cf96441653e19fa6cffc096b23204e3242
  1. src/
  2. Android.mk
  3. CleanSpec.mk
  4. README.txt