ath79: add support for Buffalo WZR-600DHP

The hardware of this device seems to be identical to WZR-HP-AG300H.
It was already implemented as a clone in ar71xx.

Specification:
- 680 MHz CPU (Qualcomm Atheros AR7161)
- 128 MiB RAM
- 32 MiB Flash
- WiFi 5 GHz a/n
- WiFi 2.4 GHz b/g/n
- 5x 1000Base-T Ethernet
- 1x USB 2.0

Installation of OpenWRT from vendor firmware:
- Connect to the Web-interface at http://192.168.11.1
- Go to “Administration” → “Firmware Upgrade”
- Upload the OpenWrt factory image

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

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

@@ -94,6 +94,7 @@ ath79_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0@eth1" "1:lan" "2:lan" "3:lan" "4:lan" "5:wan" "6@eth0"
 		;;
+	buffalo,wzr-600dhp|\
 	buffalo,wzr-hp-ag300h|\
 	tplink,archer-c25-v1|\
 	tplink,archer-c60-v1|\

target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom

@@ -132,6 +132,7 @@ case "$FIRMWARE" in
 	;;
 "ath9k-eeprom-pci-0000:00:11.0.bin")
 	case $board in
+	buffalo,wzr-600dhp|\
 	buffalo,wzr-hp-ag300h|\
 	netgear,wndr3700|\
 	netgear,wndr3700-v2|\
@@ -155,6 +156,7 @@ case "$FIRMWARE" in
 	;;
 "ath9k-eeprom-pci-0000:00:12.0.bin")
 	case $board in
+	buffalo,wzr-600dhp|\
 	buffalo,wzr-hp-ag300h|\
 	netgear,wndr3700|\
 	netgear,wndr3700-v2|\