debian/control: change maintainer to the Osmocom team / mailing list

Change-Id: Ib039e0f4a8bfd713ed1df99119c21471af8fc00c
diff --git a/debian/control b/debian/control
index 32b93e3..3b392be 100644
--- a/debian/control
+++ b/debian/control
@@ -1,7 +1,7 @@
 Source: libasn1c
 Section: libs
 Priority: extra
-Maintainer: Alexander Couzens <lynxis@fe80.eu>
+Maintainer: Osmocom team <openbsc@lists.osmocom.org>
 Build-Depends: debhelper (>=9),
                dh-autoreconf,
                libtalloc-dev