osmo-bts-master: Depend on libosmo-netifSince osmo-bts.git a2dc808acc5b99122e97c9013cb1ec2ae0c4a2a1, osmo-btsdepends on libosmo-netif. Let's add the dependency when building.Change-Id: If033ed7f25bb69a66ecff56b2a1781d6339a6d7e