BTS: enable encryption + RLL tests for Bm (TCH/F) channels

Due to OS#3418, both encryption and RLL tests have been failing.
It's time to enable Bm (TCH/F FACCH) channel related tests now!

Please note that Lm (TCH/H) remains disabled because of OS#3419.

Change-Id: I7c0f9f9f695e089e4a30f63ec362d1e6c18abff0
Related: OS#3256
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 77bffd6..fb6137c 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -301,7 +301,7 @@
 	};
 	g_AllChanTypes := {
 		/* TS 1..4: TCH/F */
-		//valueof(ts_RslChanNr_Bm(1)),
+		valueof(ts_RslChanNr_Bm(1)),
 		/* TS 5: TCH/H */
 		//valueof(ts_RslChanNr_Lm(5,1)),
 		/* TS 0: SDCCH/4 */