Updated sunxi-tools, fix mac address setup in fex file.

Sunxi-Tools now work correctly on A10/A20. Added editIni to properly edit
fex files (which are simple ini files). Which fixed at the same time the
assignation of mac address in fex for the CubieBoard 2.
Merge branch 'master' of https://github.com/EddyBeaupre/armStrap

Merge with all other machines.