deps/Makefile: Various updates

* SCCP changes were merged upstream, we don't need to use osmocom fork
* SCCP upstream now has proper tag based version
* M3UA now has a new version tag (with Routing Context)
* UNIX_DOMAIN_SOCKET has new verison tag (upstream requested changes)

Change-Id: I5526c1688d84cf985299baa973271a620b4b4544
1 file changed