libmsc/gsm_04_11.c: forward MO SMS messages over GSUP

Change-Id: I7d651fde3d608d02f275a74043dc42262aabb1b8
Depends-on: (core) Ic37f3b2114b8095cfce22977e67133b9103942e3
Depends-on: (core) Ibe325c64ae2d6c626b232533bb4cbc65fc2b5d71
Depends-on: (OsmoHLR) I0589ff27933e9bca2bcf93b8259004935778db8f
Related Change-Id: (TTCN) I7abc95b8e416f7308d54e11be11c08586d18e6c5
Related Change-Id: (TTCN) Id14bbd8bd51558cdacefea0fe042769cd69ed5c8
Related: OS#3587
diff --git a/src/libmsc/Makefile.am b/src/libmsc/Makefile.am
index 9183ff9..72da747 100644
--- a/src/libmsc/Makefile.am
+++ b/src/libmsc/Makefile.am
@@ -35,6 +35,7 @@
 	gsm_04_08.c \
 	gsm_04_08_cc.c \
 	gsm_04_11.c \
+	gsm_04_11_gsup.c \
 	gsm_04_14.c \
 	gsm_04_80.c \
 	gsm_09_11.c \