[PATCH v4] ath79: add support for Ubiquiti PowerBeam M (XW)

[Joe Ayers]

I'm having a bit of heartburn with continuing with these instructions:

> Flashing via stock GUI:
>  - Downgrade to AirOS v5.5.x (latest available is 5.5.10-u2) first (see
>    https://openwrt.org/toh/ubiquiti/powerbeam installation instructions)

This issue was resolved with:

https://github.com/openwrt/openwrt/commit/076d58d3440f382c536ea8874f58b0df23c263bc
https://github.com/openwrt/openwrt/commit/6009b3fd586a1fd91400074080afb9545c6cf7e2

A quick test would demonstrate this step is no longer necessary.

regards,
Joe AE6XE
https://www.arednmesh.org