fixup for bsc: improve encryption testing config TestHdlrEncrParams

Fix test fallout in TC_ho_into_this_bsc_a5_4: add the kc128 for the A5/4
test.

Related: SYS#5539
Change-Id: I13b7bb55d4870ffd6ceb34e2aef024ee20e23ca3
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index c599498..cd0bb96 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -6134,7 +6134,7 @@
 }
 
 testcase TC_ho_into_this_bsc_a5_4() runs on test_CT {
-	f_tc_ho_into_this_bsc_a5(f_encr_params('10'O));
+	f_tc_ho_into_this_bsc_a5(f_encr_params('10'O, kc128 := true));
 }
 
 /* Report: in inter-BSC incoming handover, when the MSC omits the Chosen Encryption Algorithm IE in the Handover Request