adm5120: convert LED setup to board.d

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

target/linux/adm5120/base-files/etc/board.d/01_leds

+#!/bin/sh
+
+. /lib/functions/uci-defaults.sh
+
+board_config_update
+
+ucidef_set_led_portstate "lan1" "LAN1" "lan1" "link_act"
+ucidef_set_led_portstate "lan2" "LAN2" "lan2" "link_act"
+ucidef_set_led_portstate "lan3" "LAN3" "lan3" "link_act"
+ucidef_set_led_portstate "lan4" "LAN4" "lan4" "link_act"
+ucidef_set_led_portstate "wan"  "WAN"  "wan"  "link_act"
+
+ucidef_set_led_netdev "wlan" "WLAN" "wlan" "wlan0"
+
+board_config_flush
+
+exit 0