gsm_29_118: add missing include to header file
The header file gsm_29_118.h is defining variables of type struct
value_string, which is declared in core/utils.h. We should add an
include to utils.h to prevent confusion when the header is used.
Change-Id: I9f9bb62d29cd068820ad5aa677717bd448de3f4a
Related: OS#3615
diff --git a/include/osmocom/gsm/protocol/gsm_29_118.h b/include/osmocom/gsm/protocol/gsm_29_118.h
index 24e9de2..c344f04 100644
--- a/include/osmocom/gsm/protocol/gsm_29_118.h
+++ b/include/osmocom/gsm/protocol/gsm_29_118.h
@@ -1,5 +1,6 @@
#pragma once
+#include <osmocom/core/utils.h>
/* TS 29.118 Section 9.2 */
enum sgsap_msg_type {