* kernel: bump 5.4 to 5.4.79

* ramips: add mt7620-nand driver for NAND flash

This add the mt7620-nand driver
and enable nand ubifs for subtarget mt7620
Signed-off-by: NChen Minqiang <ptpt52@gmail.com>
Co-authored-by: NChen Minqiang <ptpt52@gmail.com>

[mac80211]
 5b29614 mac80211: another fix for the sta connection monitor
 1ed6eb1 mac80211: backport sched_set_fifo_low
 cba4120 mac80211: add support for specifying a per-device scan list
 e0d482f rt2x00: mt7620: differentiate based on SoC's CHIP_VER

[package]
 amd64-microcode/intel-microcode/linux-firmware: update version

[mac80211]
 ca5ee6e mac80211: Fix potential endless loop
 2c14710 mac80211: add more AQL fixes/improvements
 91fb3ce mac80211: remove an obsolete patch that is no longer doing anything useful
 acf1733 mac80211: add preliminary support for enabling 802.11ax in config
 d717343 mac80211: update encap offload patches to the latest version
 673062f mac80211: allow bigger A-MSDU sizes in VHT, even if HT is limited
 caf7277 mac80211: do not allow bigger VHT MPDUs than the hardware supports
 cd36c0d mac80211: select the first available channel for 5GHz interfaces
 1c6d456 mac80211: fix regression in station connection monitor optimization
 4bd7689 mac80211: update sta connection monitor regression fix

[target]
 Sync: at91, ath25, ath79, lantiq, mediatek, mvebu.

kernel: bump to 4.14.193, 4.19.138, 5.4.59 (#5350)
  431fb8c mac80211: add AQL improvements
  6bdd4c9 mac80211: add missing backports for building with 4.14 kernels
  0106820 mac80211: add missing return code checks in AQL improvements
  e7f7101 mac80211: rework encapsulation offload support

[package]
  base-files: add function for generating random MAC
  dnsmasq: abort dhcp_check on interface state
  boot: sync upstream source code
  ath10k-ct-firmware/mt76/sch_cake: update to latest git HEAD

[script]
  download: add China Mirror Station

[target]
  Sync: arc770, ath79, bcm63xx, kirkwood, lantiq, layerscape,
        mediatek, mvebu, octeon, oxnas, pistachio, uml
  Sync most of the target patches.

Run-compiled-on: ipq40xx (4.19 & 5.4), ramips

Re-add devices: XiaoMi Wifi R3/R4/AC2100, JDCloud
Signed-off-by: NAmadeusGhost <42570690+AmadeusGhost@users.noreply.github.com>

* ramips: add support for Linksys EA7500 v2

* fix build

* fix build

* update build config

This commit fix switch and image config for Redmi AC2100.
Signed-off-by: NAmadeusGhost <amadeus@jmu.edu.cn>

* ramips: add xiaomi_miwifi-r3 support

Specification:
 - CPU: 580 MHz
 - Flash size: 128 MiB NAND
 - RAM size: 128 MiB DDR2
 - Wireless No1: SoC-integrated: MT7620A 2x2 MIMO 802.11b/g/n (2.4 GHz)
 - Wireless No2: On-board chip: MT7612E 2x2 MIMO 802.11a/n/ac (5 GHz)
 - Switch: MT7620 built-in 10/100 switch w/ vlan support
 - USB: 2.0 x1

Flash instructions:
 1. access ssh via https://wiki.openwrt.org/toh/xiaomi/mir3
 2. in ssh:
      nvram set flag_last_success=1
      nvram set boot_wait=on
      nvram set uart_en=1
      nvram commit
      mtd write lede-ramips-mt7620-miwifi-r3-squashfs-kernel1.bin kernel1
      mtd write lede-ramips-mt7620-miwifi-r3-squashfs-rootfs0.bin rootfs0
      reboot

If you want to revert back to stock fw while on LEDE:
  insert usb stick (FAT/FAT32) with stock fw renamed to miwifi.bin
  fw_setenv flag_last_success 0
  power off the device
  hold the reset button and power on the device, keep holding the reset button until yellow led starts blinking.
Signed-off-by: NChen Minqiang <ptpt52@gmail.com>

* ramips: add mt7620-nand driver for NAND flash

This add the mt7620-nand driver
and enable nand ubifs for subtarget mt7620
Signed-off-by: NChen Minqiang <ptpt52@gmail.com>
Co-authored-by: NChen Minqiang <ptpt52@gmail.com>

* kernel: bump to 4.14.169, 4.19.101

* uboot: update to latest

* mediatek: bump to v4.19

* ath79: switch to wpad

* Revert 'grub2: update to latest'

Hardware is the same as mir3g
except:
ram 256M ->  128M
switch  lan 2 3  wan 1 ->  lan 1 2 wan 4

Final git push. Add DNS Cache in Turbo ACC. Improve R7800/AC58U/ACRH17 wifi support. Some kernel updates