library/BSSAP_LE_Types: fix: add missing FIELDLENGTH attributes

Otherwise TITAN would refuse to decode any messages:

  Dynamic test case error: While RAW-decoding type
  '@BSSAP_LE_Types.PDU_BSSAP_LE': Can not decode type
  '@BSSAP_LE_Types.PDU_BSSAP_LE', because invalid message was received

Change-Id: I3db7e8784efd067ccf0bc7dbc234d9b4ff1c033c
Related: OS#4597
diff --git a/library/BSSAP_LE_Types.ttcn b/library/BSSAP_LE_Types.ttcn
index ae7385b..604fbe0 100644
--- a/library/BSSAP_LE_Types.ttcn
+++ b/library/BSSAP_LE_Types.ttcn
@@ -34,7 +34,7 @@
 
 	BSSMAP_LE_RESET			('00110000'B),
 	BSSMAP_LE_RESET_ACK		('00110001'B)
-};
+} with { variant "FIELDLENGTH(8)" };
 
 /* TS 49.031 Section 10.2 */
 type enumerated BSSMAP_LE_IEI {
@@ -78,7 +78,7 @@
 	BSSMAP_LE_IEI_SHORT_ID		('10001110'B),
 	BSSMAP_LE_IEI_COVERAGE_CLASS	('10001111'B),
 	BSSMAP_LE_IEI_MTA_ACC_SEC_RQD	('10010000'B)
-};
+} with { variant "FIELDLENGTH(8)" };
 
 /* Section 9.1 */
 type record BSSMAP_LE_PerfLocReq {