at91: switch from uci-defaults to board.d Signed-off-by: Jo-Philipp Wich <jow@openwrt.org> SVN-Revision: 47740
at91: add Device Tree based board detection Set up eth0 as LAN interface by default. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 46174