rapidio: convert bus code to use bus_groups

The bus_attrs field of struct bus_type is going away soon, dev_groups
should be used instead.  This converts the rapidio bus code to use the
correct field.

Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c
index 3e9b6a7..2be2d24 100644
--- a/drivers/rapidio/rio-driver.c
+++ b/drivers/rapidio/rio-driver.c
@@ -224,7 +224,7 @@
 	.name = "rapidio",
 	.match = rio_match_bus,
 	.dev_attrs = rio_dev_attrs,
-	.bus_attrs = rio_bus_attrs,
+	.bus_groups = rio_bus_groups,
 	.probe = rio_device_probe,
 	.remove = rio_device_remove,
 	.uevent	= rio_uevent,