update PV versions for libosmocore, libosmo-sccp and openggsn

As we're building git master, we need to make sure PV is not lagging
behind.  I wish there was some OE magic by which it could discover
PV from the source it builds.

Change-Id: Ib45238e95156f215412d51d975b1acb33633a3e1
3 files changed