debian: Make libosmo-gsup-client-dev depend on libosmo-gsup-client0

The -dev package should depend on the binary package.

Change-Id: I01e58788e8485cadecad8b8788887743b41b9f1f
diff --git a/debian/control b/debian/control
index 222cd96..23c39ce 100644
--- a/debian/control
+++ b/debian/control
@@ -49,6 +49,7 @@
 Architecture: any
 Multi-Arch: same
 Depends: ${misc:Depends},
+	 libosmo-gsup-client0 (= ${binary:Version}),
 	 libosmocore-dev
 Description: Development headers of Osmocom GSUP client library
   This is a shared library that can be used to implement client programs for