ata: pata_macio: Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

This patch adds the missing MODULE_DEVICE_TABLE() for OF to export
that information so modules have the correct aliases built-in and
autoloading works correctly.

Link: https://lkml.org/lkml/2015/7/30/519


Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>