ramips: add support for HiWiFi HC5962

This patch adds supports for the HiWiFi HC5962(gee4) http://www.hiwifi.com

Short specification:

 - MT7621AT + MT7612EN + 7603EN
 - 256MB DDR3 RAM
 - 128MB NAND flash
 - 1+3 x 1000M Ethernet
 - 1x USB 2.0 port. 1x USB 3.0 port.
 - reset button
 - UART pad on PCB (JP3: TX, RX, GND, 3.3V)

Flash instruction:

1, Download lede-ramips-mt7621-hc5962-squashfs-factory.bin
2, Login as root via SSH on 192.168.199.1 and then copy factory.bin(using wget or nc or...) to /tmp/
3, use the following commands:
   $ mtd write /tmp/lede-ramips-mt7621-hc5962-squashfs-factory.bin firmware
   $ mtd erase firmware_backup && reboot
After reboot you should be able to login as root via SSH on 192.168.1.1

Signed-off-by: ZengFei Zhang <zhangzengfei@kunteng.org>

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

@@ -80,6 +80,7 @@ ramips_setup_interfaces()
 	dir-615-h1|\
 	firewrt|\
 	hc5661a|\
+	hc5962|\
 	hlk-rm04|\
 	mac1200rv2|\
 	miwifi-mini|\
@@ -345,7 +346,8 @@ ramips_setup_macs()
 		wan_mac=$(mtd_get_mac_ascii config WAN_MAC_ADDR)
 		;;
 	hc5*61|\
-	hc5661a)
+	hc5661a|\
+	hc5962)
 		lan_mac=`mtd_get_mac_ascii bdinfo "Vfac_mac "`
 		[ -n "$lan_mac" ] || lan_mac=$(cat /sys/class/net/eth0/address)
 		wan_mac=$(macaddr_add "$lan_mac" 1)

target/linux/ramips/base-files/etc/diag.sh

@@ -147,6 +147,9 @@ get_status_led() {
 	mlwg2)
 		status_led="$board:blue:system"
 		;;
+	hc5962)
+		status_led="$board:white:status"
+		;;
 	linkits7688| \
 	linkits7688d)
 		[ "$1" = "upgrade" ] && status_led="mediatek:orange:wifi"