HO: store speech codec list from BSSMAP Assignment in conn

On BSSMAP Assignment Request received from the MSC, store the Speech Codec List
in the subscr conn, so that we may evaluate available codecs during handover
decision. (Will be used, e.g., by handover_decision_2.)

Change-Id: I8222d73085eb777696e365c94214c05d56e6d129
2 files changed