ramips: add support for LB-Link BL-W1200

The BL-W1200 Wireless Router is based on the MT7620A SoC.

Specification:

- MediaTek MT7620A (580 Mhz)
- 64 MB of RAM
- 8 MB of FLASH
- 1x 802.11bgn radio
- 1x 802.11ac radio (MT7612E)
- 5x 10/100/1000 Mbps Ethernet (MT7530)
- 2x external, non-detachable antennas (Wifi 2.4G/5G)
- 1x USB 2.0
- UART (R2) on PCB (57600 8n1)
- 9x LED (1 GPIO controlled), 1x button
- u-Boot bootloader

Known issues:
- No status LED. Used WPS LED during boot/failsafe/sysupgrade.

Installation:
1. Apply initramfs image via factory web-gui.
2. Install sysupgrade image.

How to revert to OEM firmware:
- sysupgrade -n -F stock_firmware.bin

Reviewed-by: Sungbo Eo <mans0n@gorani.run>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>

target/linux/ramips/mt7620/base-files/etc/board.d/02_network

@@ -116,6 +116,7 @@ ramips_setup_interfaces()
 			"1:lan" "2:lan" "3:lan" "5:lan" "0:wan" "6@eth0"
 		;;
 	edimax,br-6478ac-v2|\
+	lb-link,bl-w1200|\
 	tplink,archer-c2-v1)
 		ucidef_add_switch "switch0"
 		ucidef_add_switch_attr "switch0" "enable" "false"
@@ -319,6 +320,10 @@ ramips_setup_macs()
 	iptime,a104ns)
 		wan_mac=$(macaddr_add "$(mtd_get_mac_binary u-boot 0x1fc20)" 2)
 		;;
+	lb-link,bl-w1200)
+		wan_mac=$(mtd_get_mac_binary factory 0x2e)
+		label_mac=$wan_mac
+		;;
 	lenovo,newifi-y1|\
 	lenovo,newifi-y1s|\
 	ohyeah,oy-0001|\

target/linux/ramips/mt7620/base-files/etc/board.d/03_gpio_switches

@@ -22,6 +22,9 @@ head-weblink,hdrm200)
 	ucidef_add_gpio_switch "io4" "I/O 4" "14"
 	ucidef_add_gpio_switch "power_mpcie" "mPCIe power" "21" "1"
 	;;
+lb-link,bl-w1200)
+	ucidef_add_gpio_switch "eth_leds_enable" "ETH LEDs enable" "10" "1"
+	;;
 zbtlink,zbt-we826-e)
 	ucidef_add_gpio_switch "sim_switch" "SIM slot switch" "13"
 	ucidef_add_gpio_switch "power_mpcie" "mPCIe power" "14" "1"