bsc_vty: include dyn TS info in vty show lchan

Extend both 'show lchan <bts> <trx> <lchan>' and 'show lchan summary' to
include information on dynamic timeslots.

Have one common function that prints " as foo" or " switching foo -> bar" to
the vty, use it in lchan_dump_full_vty() and lchan_dump_short_vty().

In lchan_dump_short_vty(), split the vty_out call in two in order to interleave
the dyn ts info right after the pchan.

The summary hence looks e.g. like this for osmocom style dyn ts:

    BTS 0, TRX 0, Timeslot 5 TCH/F_TCH/H_PDCH as PDCH, Lchan 0, Type NONE, State ACTIVE - L1 MS Power: 0 dBm RXL-FULL-dl: -110 dBm RXL-FULL-ul: -110 dBm

or

    BTS 0, TRX 0, Timeslot 4 TCH/F_TCH/H_PDCH switching NONE -> PDCH, Lchan 0, Type NONE, State BROKEN UNUSABLE - L1 MS Power: 0 dBm RXL-FULL-dl: -110 dBm RXL-FULL-ul: -110 dBm

Change-Id: I3eb72ac7f0a520a8eefe171b9fb357f149aa3fda
1 file changed
tree: 876f517d46dcac314e04fc143561d3088584d474
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