From LGA1150 dalao (https://github.com/LGA1150/openwrt)

Warning: The compiled firmware only supports flashing under OpBoot.

MobiPromo CM520-79F is an AC1300 dual band router based on IPQ4019

Specification:

SoC/Wireless: QCA IPQ4019
RAM: 512MiB
Flash: 128MiB SLC NAND
Ethernet PHY: QCA8075
Ethernet ports: 1x WAN, 2x LAN
LEDs: 7 LEDs
      2 (USB, CAN) are GPIO
            other 5 (2.4G, 5G, LAN1, LAN2, WAN) are connected to a shift
	    register
Signed-off-by: NDENG Qingfang <dengqf6@mail2.sysu.edu.cn>

ipq40xx: fix build error for cm520-79f (#30)

This commit fix 94a743ea531b4c10e91c17dc17535471e95f308b
Signed-off-by: NAmadeusGhost <amadeus@jmu.edu.cn>

CM520-79F: fix wan port (#33)

This commit fix 223124e
Signed-off-by: NAmadeusGhost <amadeus@jmu.edu.cn>

CM520-79F: disable vlan
Co-authored-by: NAmadeusGhost <42570690+AmadeusGhost@users.noreply.github.com>

This reverts commit 2289184a.

* delete r619ac sd gpio

* ipq40xx: add p2w-r619ac 128M NAND support

* ipq40xx: add p2w-r619ac 128M NAND support

* ipq40xx: add p2w-r619ac 128M NAND support

* ipq40xx: add p2w-r619ac 128M NAND support

* delete sd gpio

This reverts commit 176f1241.

This reverts commit baa682be.