debian: fix build errors with libosmogsm and libosmoctrl

libosmogsm: the transition from 5 to 6 wasn't done properly. Fixed version number.
libosmoctrl: missing definition in debian/control and also missing libosmoctrl0.install.
diff --git a/debian/libosmoctrl0.install b/debian/libosmoctrl0.install
new file mode 100644
index 0000000..6b23be8
--- /dev/null
+++ b/debian/libosmoctrl0.install
@@ -0,0 +1 @@
+usr/lib/libosmoctrl*.so.*