greybus: loopback: remove endo reference

Replace reference to "endo0" and generate the raw-latency filename based
on the host-device bus id instead.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/loopback.c

@@ -922,10 +922,11 @@ static int gb_loopback_connection_init(struct gb_connection *connection)
 		return -ENOMEM;
 	gb_loopback_reset_stats(&gb_dev);
 
-	/* If this is the first connection - create a module endo0 entry */
+	/* If this is the first connection - create a per-bus entry */
 	mutex_lock(&gb_dev.mutex);
 	if (!gb_dev.count) {
-		snprintf(name, sizeof(name), "raw_latency_endo0");
+		snprintf(name, sizeof(name), "raw_latency_%d",
+				connection->bundle->intf->hd->bus_id);
 		gb_dev.file = debugfs_create_file(name, S_IFREG | S_IRUGO,
 						  gb_dev.root, &gb_dev,
 				  &gb_loopback_debugfs_dev_latency_ops);