tty: n_smux: Clarify test messages

Clarify test messages for list-empty reporting to avoid confusing
the list-empty flag with an event count value.

Change-Id: I31aeb6feb89ada5f7d5b691432b5d8f4aba64cc8
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>
diff --git a/drivers/tty/smux_test.c b/drivers/tty/smux_test.c
index 62e9465..75ccfe9 100644
--- a/drivers/tty/smux_test.c
+++ b/drivers/tty/smux_test.c
@@ -285,12 +285,12 @@
 		"\tevent_tiocm=%d\n"
 		"\tevent_read_done=%d\n"
 		"\tevent_read_failed=%d\n"
-		"\tread_events=%d\n"
+		"\tread_events empty=%d\n"
 		"\tget_rx_retry=%d\n"
-		"\tget_rx_retry_events=%d\n"
+		"\tget_rx_retry_events empty=%d\n"
 		"\tevent_write_done=%d\n"
 		"\tevent_write_failed=%d\n"
-		"\twrite_events=%d\n",
+		"\twrite_events empty=%d\n",
 		cb->cb_count,
 		cb->cb_completion.done,
 		cb->event_connected,
@@ -301,9 +301,9 @@
 		cb->event_tiocm,
 		cb->event_read_done,
 		cb->event_read_failed,
-		!list_empty(&cb->read_events),
+		list_empty(&cb->read_events),
 		cb->get_rx_buff_retry_count,
-		!list_empty(&cb->get_rx_buff_retry_events),
+		list_empty(&cb->get_rx_buff_retry_events),
 		cb->event_write_done,
 		cb->event_write_failed,
 		list_empty(&cb->write_events)