Input: fix input device deregistration

Remove main attribute group (name, phys, uniq) when unregistering
input devices.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/input.c

@@ -805,6 +805,7 @@ void input_unregister_device(struct input_dev *dev)
 
 	sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
 	sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
+	sysfs_remove_group(&dev->cdev.kobj, &input_dev_group);
 	class_device_unregister(&dev->cdev);
 
 	input_wakeup_procfs_readers();