Log FN and RA in TC_rach_max_ta

Similar to other RA-related tests, log FN and RA values in case of test
failure.

Change-Id: I815b10d0f0e9f29de7d306fa052b72b9e483dd9d
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 0b70da3..86d43fe 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -1100,7 +1100,7 @@
 		setverdict(pass);
 		}
 	[expect_pass] T.timeout {
-		Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for CHAN RQD");
+		Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Timeout waiting for CHAN RQD: FN=", fn, " RA=", ra));
 		}
 	}
 }