bsc_vty: add features to disable specific lchans via vty

In some test and debug situations it is useful to have the ability to
lock certain lchans in a way that the BSC can not allocate them. One
application might be to simulate an exhaustion of all TCH/H channels in
order to force the BSC to take one of the available TCH/F.

Lets add a command to the vty which alloes us sen lchans from
LCHAN_ST_UNUSED
to LCHAN_ST_BORKEN and vice versa.

Change-Id: I397e68e26d6a1727890353fa34f4897b54795866
Related: OS#3503
2 files changed