qualcommax: ipq60xx: add support for netgear wax214

qualcommax: ipq60xx: add support for netgear wax214

    Netgear WAX214 is a 802.11 ax dual-band AP
    with PoE. (similar to Engenius EWS357APV3)

    Specifications:

        •     CPU: Qualcomm IPQ6010 Quad core Cortex-A53
        •     RAM: 512MB of DDR3
        •     Storage: 128MB NAND (Macronix MX30UF1G18AC)
        •     Ethernet: 1x 1G RJ45 port (QCA8072) PoE
        •     WIFI:
              2.4GHz: Qualcomm QCN5022 2x2 802.11b/g/n/ax 574 Mbps PHY rate
              5GHz: Qualcomm QCN5052 2x2 802.11a/b/g/n/ac/ax 1201 PHY rate

        •     LEDs:
              4 x GPIO-controlled LEDs
                - 1 Power LED (orange)
                - 1 LAN LED (blue)
                - 1 WIFI 5g LED (blue)
                - 1 WIFI 2g LED (blue)
                black_small_square  Buttons: 1x soft reset
                black_small_square  Power: 12V DC jack or PoE (802.3af )

            An populated serial header is onboard, format is
             1.25mm 4p (DF13A-4P-1.25H)
            RX/TX is working, bootwait is active, secure boot is not
            enabled.

            The root password of the stock firmware is unknown,
            but failsafe mode can be entered to reset the password.

            Installation Instructions:

                - obtain serial access
                - stop auto boot (press "4", Entr boot command line
		  interface)
                - setenv active_fw 0 (to boot from the primary rootfs,
                  or set to 1 to boot from the secondary rootfs
                  partition)
                - saveenv

                - tftpboot the initramfs image
                - bootm

                - copy
		  openwrt-qualcommax-ipq60xx-netgear_wax214-squashfs-factory.ubi
                  to the device
                - write the image to the NAND:
                   - cat /proc/mtd and look for rootfs partition (should
		     be mtd11,
                     or mtd12 if you choose active_fw 1)
                   - ubiformat /dev/mtd11 -f -y
		     openwrt-qualcommax-ipq60xx-netgear_wax214-squashfs-factory.ubi
                - reboot

            Note: the firmware is senao-based. But I was unable to build
                  a valid senao-header into the image.
                  Maybe they changed the header format and senaoFW isn't
                  working any more.

Signed-off-by: Dirk Buchwalder <buchwalder@posteo.de>