sunxi: Generic A13_MID dram config, TZX-Q8-713B6 and TZX-Q8-713B7 support

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
sunxi: Generic A10s-OLinuXino dram config, Ampe A76 support

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>