[doc] Define 'gsup' group with proper name, add intro text
Change-Id: Ieee6213dc5aad082a2d439c7418b51f281b80b1a
diff --git a/src/gsm/gsup.c b/src/gsm/gsup.c
index 685c91f..e5b0a66 100644
--- a/src/gsm/gsup.c
+++ b/src/gsm/gsup.c
@@ -1,5 +1,3 @@
-/*! \file gsup.c
- * Osmocom Generic Subscriber Update Protocol message encoder/decoder. */
/*
* (C) 2014 by sysmocom s.f.m.c. GmbH
* (C) 2015 by Holger Hans Peter Freyther
@@ -33,6 +31,7 @@
/*! \addtogroup gsup
* @{
+ * \file gsup.c
* Osmocom Generic Subscriber Update Protocol
*/