arm: socfpga: Add support for the Terasic DE-0 Atlas board

Add support for the Terasic DE0-Nano/Atlas-SoC Kit, which is a CycloneV
based board. The board can boot from SD/MMC. Ethernet is also supported.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
12 files changed