It uses 3 different SOC_FAMILY sun4i,sun5i,sun7i this list come from here http://sunxi.org/Allwinner_SoC_Family
Adding a new machine should be now more easy, as we have now to only create a new machine.conf file, set the right SOC_FAMILY and include the right arch inclue.
The latest revision of U-Boot requires changing the U-Boot machine names for
olimex based boards, as these were changed in U-Boot.
U-Boot tested on Olimex A20 Olinuxino
Signed-off-by: Jens Lucius <info@jenslucius.com>