Add CC_CAUSE value_string array

Adds a value_string array for GSM 04.08 Call Control
cause values

Change-Id: I296f208581ce2550805f9d96e20f7319e1199023
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 1da398c..60d6ed8 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -321,6 +321,7 @@
 gsm48_rr_msgtype_names;
 gsm48_mm_msgtype_names;
 gsm48_cc_msgtype_names;
+gsm48_cc_cause_names;
 gsm48_pdisc_msgtype_name;
 gsm48_reject_value_names;