driver core: bus_type: add dev_groups

attribute groups are much more flexible than just a list of attributes,
due to their support for visibility of the attributes, and binary
attributes. Add dev_groups to struct bus_type which should be used
instead of dev_attrs.

dev_attrs will be removed from the structure soon.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/device.h b/include/linux/device.h
index 22b546a..3aec4a6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -66,6 +66,7 @@
  * @bus_attrs:	Default attributes of the bus.
  * @dev_attrs:	Default attributes of the devices on the bus.
  * @drv_attrs:	Default attributes of the device drivers on the bus.
+ * @dev_groups:	Default attributes of the devices on the bus.
  * @match:	Called, perhaps multiple times, whenever a new device or driver
  *		is added for this bus. It should return a nonzero value if the
  *		given device can be handled by the given driver.
@@ -104,8 +105,9 @@
 	const char		*dev_name;
 	struct device		*dev_root;
 	struct bus_attribute	*bus_attrs;
-	struct device_attribute	*dev_attrs;
+	struct device_attribute	*dev_attrs;	/* use dev_groups instead */
 	struct driver_attribute	*drv_attrs;
+	const struct attribute_group **dev_groups;
 
 	int (*match)(struct device *dev, struct device_driver *drv);
 	int (*uevent)(struct device *dev, struct kobj_uevent_env *env);