Enable VoLTE for operators

- Czech: DTAG
- Germany: VDF
- India: Reliance
- Italy: VDF
- JP: SBM, DCM
- KR: KT, SK, U+
- Spain: VDF

Bug: 22717168
Change-Id: Id2d4874c65ca1e81ac103c9478614a13143e4e60
36 files changed
tree: 1336af6afad70136546c284240110ab425fe8aed
  1. Android.mk
  2. AndroidManifest.xml
  3. assets/
  4. proguard.flags
  5. res/
  6. src/
  7. tests/