OpenWrt Support for D-Link DAP-X1860

After some rounds of git bisect, builds and flashing:

f3d8de73988a79440d183050dc9711bb29d2a5e1 is the first bad commit
commit f3d8de73988a79440d183050dc9711bb29d2a5e1
Author: Christian Marangi <ansuelsmth@gmail.com>
Date:   Sat Jan 21 01:23:22 2023 +0100

    iwinfo: update to latest Git HEAD