Fix regression in 'bts: Clean up TS selection in sign_link_up'
Fix regression in 'bts: Clean up TS selection in sign_link_up'

Fixes: 518ada9414755ab859e0139289090a1ef7ba9be3
Change-Id: I63af96235eb6e0a7334936f65e1f44d4422198a5

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts