sunxi: add support for Nintendo NES Classic Edition

Add board support for sun8i_r16 Nintendo NES Classic edition.

Signed-off-by: FUKAUMI Naoki <naobsd@gmail.com>
[jagan: Add commit message body]
Signed-off-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
4 files changed