Update CDMA conference capabilities on recalculate.

Before merge/swap was set when the conference was initially created,
but not updated afterwards. This meant that if a conference later
received an incoming call, it would not be updated to show SWAP.

Bug: 18321767
Change-Id: I907c3bbb38c7cfe26aaa7d881a72110a3d2d29eb
2 files changed