This patch adds the necessary files to support the Marvell Armada 8k
devel board. Most board specfic files are shared with the Armada 7k
boards under the name "armada-8k*". So only minimal changes are
necessary to add this basic board support (except the DT files of
course).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Neta Zur Hershkovits <neta@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Omri Itach <omrii@marvell.com>
Cc: Igal Liberman <igall@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>