rename gprs_gsup_client.h to gsup_client.h

This is in preparation for moving gsup to libcommon, which is in turn
preparation for libvlr.

Related: OS#1592
Change-Id: I9c95d00f1a9420887a44c938b1d0ee3e20586f4c
diff --git a/openbsc/src/gprs/gprs_gsup_client.c b/openbsc/src/gprs/gprs_gsup_client.c
index cd94a8a..6195fa6 100644
--- a/openbsc/src/gprs/gprs_gsup_client.c
+++ b/openbsc/src/gprs/gprs_gsup_client.c
@@ -21,7 +21,7 @@
  *
  */
 
-#include <openbsc/gprs_gsup_client.h>
+#include <openbsc/gsup_client.h>
 
 #include <osmocom/abis/ipa.h>
 #include <osmocom/gsm/protocol/ipaccess.h>
diff --git a/openbsc/src/gprs/gprs_subscriber.c b/openbsc/src/gprs/gprs_subscriber.c
index 100fd91..23dbdd4 100644
--- a/openbsc/src/gprs/gprs_subscriber.c
+++ b/openbsc/src/gprs/gprs_subscriber.c
@@ -23,7 +23,7 @@
 #include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
 #include <osmocom/gsm/gsup.h>
 #include <openbsc/gsm_subscriber.h>
-#include <openbsc/gprs_gsup_client.h>
+#include <openbsc/gsup_client.h>
 
 #include <openbsc/sgsn.h>
 #include <openbsc/gprs_sgsn.h>
diff --git a/openbsc/src/gprs/gsup_test_client.c b/openbsc/src/gprs/gsup_test_client.c
index 901b870..c8ed03d 100644
--- a/openbsc/src/gprs/gsup_test_client.c
+++ b/openbsc/src/gprs/gsup_test_client.c
@@ -9,7 +9,7 @@
 #include <osmocom/core/application.h>
 #include <osmocom/gsm/gsup.h>
 
-#include <openbsc/gprs_gsup_client.h>
+#include <openbsc/gsup_client.h>
 #include <openbsc/debug.h>
 
 static struct gsup_client *g_gc;
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 1b477e5..21c865b 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -34,7 +34,7 @@
 #include <osmocom/gprs/gprs_ns.h>
 #include <openbsc/gprs_sgsn.h>
 #include <openbsc/vty.h>
-#include <openbsc/gprs_gsup_client.h>
+#include <openbsc/gsup_client.h>
 
 #include <osmocom/vty/command.h>
 #include <osmocom/vty/vty.h>