Help compile LEDE 17.01.06 support USB for Dlink DIR615 C2

Please help me, i follow this guide but not work in LEDE.
Thanks in advance!

I run the WRT160NL build on mine (it is a C1 but I think the C2 is practically identical) It has USB support built in. I don't remember if I changed the bootloader or not.

Of course you will want to upgrade the flash and RAM while you are in there. The WRT160NL build is great for anything AP81 / AR9130 based (WNR2000v1 another example). It will adjust to a 16 MB flash without rebuilding.