ath79: add support for AVM FRITZ!WLAN Repeater 450E

SOC:    Qualcomm QCA9556 (Scorpion) 560MHz MIPS74Kc
RAM:    64MB Zentel A3R12E40CBF DDR2
FLASH:  16MiB Winbond W25Q128 SPI NOR
WLAN1:  QCA9556 2.4 GHz 802.11b/g/n 3x3
INPUT:  WPS button
LED:    Power, WiFi, LAN, RSSI indicator
Serial: Header Next to Black metal shield
        Pinout is 3.3V - RX - TX - GND (Square Pad is 3.3V)
        The Serial setting is 115200-8-N-1.

Installation via EVA:
In the first seconds after Power is connected, the bootloader will
listen for FTP connections on 192.168.178.1. Firmware can be uploaded
like following:

  ftp> quote USER adam2
  ftp> quote PASS adam2
  ftp> binary
  ftp> debug
  ftp> passive
  ftp> quote MEDIA FLSH
  ftp> put openwrt-sysupgrade.bin mtd1

Note that this procedure might take up to two minutes.
You need to powercycle the device afterwards to boot OpenWRT.

Tested-by: Andreas Ziegler <dev@andreas-ziegler.de>
Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/ath79/generic/base-files/etc/board.d/01_leds

@@ -12,7 +12,8 @@ case "$board" in
 	ucidef_set_led_netdev "lan" "LAN" "$boardname:orange:eth0" "eth0"
 	ucidef_set_led_switch "wan" "WAN" "$boardname:orange:eth1" "switch0" "0x04"
 	;;
-alfa-network,ap121f)
+alfa-network,ap121f|\
+avm,fritz450e)
 	ucidef_set_led_netdev "lan" "LAN" "$boardname:green:lan" "eth0"
 	;;
 avm,fritz1750e)

target/linux/ath79/generic/base-files/etc/board.d/02_network

@@ -338,7 +338,8 @@ ath79_setup_macs()
 	alfa-network,ap121f)
 		label_mac=$(mtd_get_mac_binary art 0x1002)
 		;;
-	avm,fritz1750e)
+	avm,fritz1750e|\
+	avm,fritz450e)
 		label_mac=$(fritz_tffs -n macwlan -i $(find_mtd_part "tffs (1)"))
 		;;
 	avm,fritz300e)