lib/bssmap: Introduce function f_bssmap_ie_cic_2_int()

Function will be re-used in forthcoming commits.

Change-Id: Ifc7444ecca1571959ed83b43d3c7461c637686ae
diff --git a/library/BSSMAP_Templates.ttcn b/library/BSSMAP_Templates.ttcn
index b377358..9015680 100644
--- a/library/BSSMAP_Templates.ttcn
+++ b/library/BSSMAP_Templates.ttcn
@@ -402,6 +402,11 @@
 	cicLow := bit2oct((substr(int2bit(span, 11), 8, 3) << 5) & int2bit(ts, 5))
 }
 
+function f_bssmap_ie_cic_2_int(BSSMAP_IE_CircuitIdentityCode cic_ie) return integer {
+	var integer cic := (oct2int(cic_ie.cicHigh) * 256) + oct2int(cic_ie.cicLow);
+	return cic;
+}
+
 template (value) BSSMAP_IE_AoIP_TransportLayerAddress ts_BSSMAP_IE_AoIP_TLA(BSSMAP_FIELD_IPAddress addr,
 									    uint16_t udp_port,
 									    integer len) := {