void ion_device_destroy(struct ion_device *dev)
{
	misc_deregister(&dev->dev);
	debugfs_remove_recursive(dev->debug_root);
	/* XXX need to free the heaps and clients ? */
	kfree(dev);
}
void ion_device_destroy(struct ion_device *dev)
{
	misc_deregister(&dev->dev);
	debugfs_remove_recursive(dev->debug_root);
	 
	kfree(dev);
}