bsc_api: Rename lchan_for_subscr to connection_for_subscr and update code

With handover and late/early assignment there might be two channels
for one subscriber and only the BSC knows which one to use, so use
the gsm_subscriber_connection everywhere...
7 files changed
tree: fb27e7bf7c080946cfbc38b3beea7e90c50e2fcb
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. wireshark/