ganc: add value_strings for GAN message type and protocol discriminator
diff --git a/include/osmocom/gsm/gan.h b/include/osmocom/gsm/gan.h
new file mode 100644
index 0000000..ab4c1e4
--- /dev/null
+++ b/include/osmocom/gsm/gan.h
@@ -0,0 +1,9 @@
+#ifndef _OSMO_GSM_GAN_H
+#define  _OSMO_GSM_GAN_H
+
+#include <osmocom/core/utils.h>
+
+extern const struct value_string gan_msgt_vals[];
+static const struct value_string gan_pdisc_vals[];
+
+#endif