ath79: add support for COMFAST CF-E560AC

ath79: add support for COMFAST CF-E560AC

This commit adds support for the COMFAST CF-E560AC, an ap143 based
in-wall access point.

Specifications:
 - SoC: Qualcomm Atheros QCA9531
 - RAM: 128 MB DDR2 (Winbond W971GG6SB-25)
 - Storage: 16 MB NOR (Winbond 25Q128JVSO)
 - WAN: 1x 10/100 PoE ethernet (48v)
 - LAN: 4x 10/100 ethernet
 - WLAN1: QCA9531 - 802.11b/g/n - 2x SKY85303-21 FEM
 - WLAN2: QCA9886 - 802.11ac/n/a - 2x SKY85735-11 FEM
 - USB: one external USB2.0 port
 - UART: 3.3v, 2.54mm headers already populated on board
 - LED: 7x external
 - Button: 1x external
 - Boot: U-Boot 1.1.4 (pepe2k/u-boot_mod)

MAC addressing:

- stock
  LAN    *:40 (label)
  WAN    *:41
  5G     *:42
  2.4G   *:4a

- flash (art partition)
  0x0    *:40 (label)
  0x6    *:42
  0x1002 *:41
  0x5006 *:43

This device contains valid MAC addresses in art 0x0, 0x6, 0x1002 and
0x5006, however the vendor firmware only reads from art:0x0 for the LAN
interface and then increments in 02_network. They also jump 8 addresses
for the second wifi interface (2.4 GHz). This behavior has been duplicated
in the DTS and ath10k hotplug to align addresses with the vendor firmware
v2.6.0.

Recovery instructions:

This device contains built-in u-boot tftp recovery.

1. Configure PC with static IP 192.168.1.10/24 and tftp server.
2. Place desired image at /firmware_auto.bin at tftp root.
3. Connect device to PC, and power on.
4. Device will fetch flash from tftp, flash and reboot into new image.

Signed-off-by: August Huber <auh@google.com>
[move jtag_disable_pins, remove unnecessary statuses in DTS, remove
duplicate entry in 11-ath10k-caldata, remove hub_port0 label in DTS]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>