[U-Boot] [PATCH] sunxi: net: Use net_ops hooks to get the MAC

This patch series is split off from my previous series, [PATCH v3] Retrieve MAC address from EEPROM and only adds, uses and fixes the read/write rom_hwaddr hooks.

I changed things around as suggested by Hans. As far as I can tell this should work now as you described. The fdt_fixup_ethernet function should populate the environment as expected.