qualcommax: ipq60xx: Add 8devices Mango DVK

qualcommax: ipq60xx: Add 8devices Mango DVK

8devices Mango DVK is a single board computer / devkit for 8devices Mango
system-on-module (SoM).

Specifications:
* CPU: Qualcomm IPQ6010 Quad core Cortex-A53 1.8GHz
* RAM: 512 MB
* Storage:
    * 32 MB serial NOR flash (on SoM)
    * 256 MB parallel NAND flash (on DVK)
* Ethernet:
    * 2x1G RJ45 ports(QCA8072 or QCA8075)
    * 1x2.5G RJ45 port (QCA8081)
    * 1xSFP (shares SGMII with QCA8081)
* Switch: Qualcomm Atheros IPQ6010
* WLAN:
    * 2.4GHz: QCN5121 2x2 802.11b/g/n/ax 574 Mbps PHY rate
    * 5GHz: QCN5152 2x2 802.11a/n/ac/ax 1201 Mbps PHY rate
* USB:
    * 1x USB3.0 Type-A port
    * 1x USB2.0 available at mini PCIe slot
* PCIe: 1x mini PCIe slot 1xLane Gen3 (8GT/s)
* SD/eMMC (on a single shared bus - only one can be active):
    * micro SD slot
    * eMMC module connector
* LEDs:
    * Green power led (not controllable)
    * Green 2.4GHz radio led (GPIO 67)
    * Green 5GHz radio led (GPIO 66)
* Buttons:
    * 1x (WPS GPIO79) button
* GPIOs: 2.54mm header brings out 18 GPIOs (1.8V level)
* UART: 4-pin UART header (3.3V level)
    * 115200 8N1, 3.3V-Tx-Rx-GND (3.3V is pin 1 close to boot-switch SW2)
* Power:
    * PoE IN on 2.5G port (passive 24-48V)
    * DC power terminal (12-58V)

Installation instructions:

Vendor image format is compatible with squashfs-sysupgrade image. Run:

sysupgrade -n -F openwrt-qualcommax-ipq60xx-8devices_mango-dvk-squashfs-sysupgrade.bin

Signed-off-by: Mantas Pucka <mantas@8devices.com>