pkg-config: Fix libosmo-gsup-client pkg-config file

Both description and actual "Libs" line were broken.

Change-Id: I92e625418d53a2f17feca87c72624b84183f8cdb
diff --git a/libosmo-gsup-client.pc.in b/libosmo-gsup-client.pc.in
index 4210a4a..8bbae08 100644
--- a/libosmo-gsup-client.pc.in
+++ b/libosmo-gsup-client.pc.in
@@ -3,9 +3,9 @@
 libdir=@libdir@
 includedir=@includedir@
 
-Name: Osmocom GSUP and OAP Client Library
+Name: Osmocom GSUP Client Library
 Description: C Utility Library
 Version: @VERSION@
-Libs: -L${libdir} @TALLOC_LIBS@ -losmogsm -losmocore
+Libs: -L${libdir} -losmo-gsup-client
 Cflags: -I${includedir}/