ramips: add support for TP-Link Archer AX21
This patch adds support for the TP-Link Archer AX21 v4.
Device specification
--------------------
SoC Type: Mediatek MT7621DAT
RAM: DDR (128MB)
Flash: ESMT EN25QH128A (16MB)
Ethernet: 5x (4 lan, 1 wan) via embedded switch/SoC built-in
Wi-Fi: 2x2 2.4GHz via MT7975DN, 2x2 5GHz via MT7905DAN
LEDs: Power, 2.4GHz, 5GHz, WAN, LAN, WPS
Buttons: Reset, WPS
Installation
------------
Upload the factory image using the Web UI.
Signed-off-by: Andrew LaMarche <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20932
Signed-off-by: Hauke Mehrtens <[email protected]>