add function for performing 'CONNECT MULTI-DROP LINK" as per GSM 12.21

don't be confused, BS-11 does not need this.  But since I wrote the code
before knowing that, I can just as well commit it.
2 files changed
tree: a8c7492878574b0979dc836d81f54281c20f64bf
  1. linux-kernel/
  2. openbsc/
  3. wireshark/