ar71xx: add support for RB951Ui-2nD

This patch adds support for the MikroTik RouterBOARD hAP
https://routerboard.com/RB951Ui-2nD

Specifications:
- SoC: Qualcomm QCA9531 (650MHz)
- RAM: 64MB
- Storage: 16MB NOR SPI flash
- Wireless: builtin QCA9531, 2x2:2
- Ethernet: 5x100M (1 PoE in, 1 PoE out)
- USB: Type A

Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>

target/linux/ar71xx/base-files/etc/board.d/01_leds

@@ -225,6 +225,15 @@ rb-750)
 rb-941-2nd)
 	ucidef_set_led_timer "user" "USR/ACT" "rb:green:user" "1000" "1000"
 	;;
+rb-951ui-2nd)
+	ucidef_set_led_timer "user" "USER" "rb:green:user" "1000" "1000"
+	ucidef_set_led_netdev "port1" "port1" "rb:green:port1" "eth0"
+	ucidef_set_led_switch "port2" "port2" "rb:green:port2" "switch0" "0x10"
+	ucidef_set_led_switch "port3" "port2" "rb:green:port3" "switch0" "0x08"
+	ucidef_set_led_switch "port4" "port3" "rb:green:port4" "switch0" "0x04"
+	ucidef_set_led_switch "port5" "port5" "rb:green:port5" "switch0" "0x02"
+	ucidef_set_led_wlan "wlan" "WLAN" "rb:blue:wlan" "phy0tpt"
+	;;
 rb-2011l|\
 rb-2011uas|\
 rb-2011uias|\

target/linux/ar71xx/base-files/etc/board.d/02_network

@@ -137,6 +137,7 @@ ar71xx_setup_interfaces()
 	pb42|\
 	pb44|\
 	rb-951ui-2hnd|\
+	rb-951ui-2nd|\
 	routerstation|\
 	tl-wr710n|\
 	tl-wr720n-v3|\

target/linux/ar71xx/base-files/etc/board.d/03_gpio_switches

@@ -27,6 +27,10 @@ rb-912uag-2hpnd|\
 rb-912uag-5hpnd)
 	ucidef_add_gpio_switch "usb_power_switch" "USB Power Switch" "52" "1"
 	;;
+rb-951ui-2nd)
+	ucidef_add_gpio_switch "usb_power_switch" "USB Power Switch" "45" "1"
+	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "14"
+	;;
 esac
 
 board_config_flush

target/linux/ar71xx/base-files/etc/diag.sh

@@ -299,6 +299,7 @@ get_status_led() {
 	rb-912uag-2hpnd|\
 	rb-912uag-5hpnd|\
 	rb-941-2nd|\
+	rb-951ui-2nd|\
 	rb-mapl-2nd)
 		status_led="rb:green:user"
 		;;