lchan: Remember why a channel is broken using static strings

Remember why a channel is being marked as broken. So we can
maybe understand what happend.
5 files changed
tree: ce7409a449e1e42280967b8fb5ad2db5303ed588
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README