These structures are fundamental to implementing fw_devlink and sync_state(). Since they are still evolving, add some padding in case we need to backport any important bug fixes. struct device_link struct class struct fwnode_handle struct fwnode_link Bug: 183615740 Signed-off-by: Saravana Kannan <saravanak@google.com> Change-Id: Id9daf7cf9ae5d94fb0134144f8220a241ccbaef8