bts: Make f_TC_meas_res_periodic work with real BTS

In a real BTS + OsmocomBB-L1, we cannot control fake ToA/RSSI, but we
simply assume the signal is strong/good.

Change-Id: I55a79f9e23118d2bb28f27cbcc7ab28712570ef1
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index e97c6d9..7b6fc2f 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -921,12 +921,17 @@
 	f_l1_tune(L1CTL);
 	RSL.clear;
 
-	g_pars.l1_pars.meas_ul.full.rxlev := dbm2rxlev(-100);
-	g_pars.l1_pars.meas_ul.sub.rxlev := g_pars.l1_pars.meas_ul.full.rxlev;
-	f_trxc_fake_rssi(100);
+	if (mp_bb_trxc_port != -1) {
+		g_pars.l1_pars.meas_ul.full.rxlev := dbm2rxlev(-100);
+		f_trxc_fake_rssi(100);
 
-	g_pars.l1_pars.timing_offset_256syms := 512; /* 2 symbols */
-	f_trx_fake_toffs256(g_pars.l1_pars.timing_offset_256syms);
+		g_pars.l1_pars.timing_offset_256syms := 512; /* 2 symbols */
+		f_trx_fake_toffs256(g_pars.l1_pars.timing_offset_256syms);
+	} else {
+		g_pars.l1_pars.timing_offset_256syms := 0; /* FIXME */
+		g_pars.l1_pars.meas_ul.full.rxlev := dbm2rxlev(-55); /* FIXME */
+	}
+	g_pars.l1_pars.meas_ul.sub.rxlev := g_pars.l1_pars.meas_ul.full.rxlev;
 
 	f_est_dchan();