ARM: tegra: Add device-tree for Ouya

The Ouya was the sole device produced by Ouya Inc in 2013.
It was a game console originally running Android 5 on top of Linux 3.1.10.

This patch adds the device tree supporting the Ouya.
It has been tested on the original variant with Samsung ram.

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>