qualcommax: ipq50xx: add support for GL.iNET GL-B3000

qualcommax: ipq50xx: add support for GL.iNET GL-B3000
Add support for GL.iNET (AX3000) B3000.

Speficiations:
* SoC: Qualcomm IPQ5018 (64-bit dual-core ARM Cortex-A53 @ 1.0Ghz)
* Memory: Winbond W634GU6NQB-11 (512 MiB DDR3-933)
* Serial Port: 3v3 TTL 115200n8
* Wi-Fi: IPQ5018 (2x2 2.4 Ghz 802.11b/g/n/ax)
* Wi-Fi: QCN6102 (2x2:2 5 Ghz 802.11an/ac/ax)
* Ethernet: IPQ5018 integrated virtual switch connected to an external
            QCA8337 switch (3 Ports 10/100/1000 GBASE-T)
* Flash: Winbond W25N01GWZEIG (128 MiB)
* LEDs: 1x single-color blue LED (GPIO 24 Active High)
        1x single-color white LED (GPIO 23 Active High)
* Buttons: 1x Reset (GPIO 27 Active Low)

Flash Instructions:

*** The .img files are now universal ! ***

Openwrt		--> openwrt-qualcommax-ipq50xx-glinet_gl-b3000-squashfs-factory.img

GL.iNet OEM	--> openwrt-b3000-4.5.18-0731-1722397535.img

Either file can be flashed, in any of the available upgrade options, in both Firmwares.

Pick a file .. pick a method .. and SEND IT !!

Signed-off-by: Scott Mercer <TheRootEd24@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/17903
Signed-off-by: Robert Marko <robimarko@gmail.com>