Add TP-Link TL-WDR3600 v1 LEDs

This solves https://github.com/attila-lendvai/openwrt-auto-extroot/issues/24

image-extras/common/root/autoprovision-functions.sh

@@ -32,6 +32,10 @@ case $(board_name) in
         autoprovisionUSBLed="green:wps"
         autoprovisionStatusLed="green:wlan5g"
         ;;
+    *tl-wdr3600*)
+        autoprovisionUSBLed="green:wlan2g"
+        autoprovisionStatusLed="green:wlan5g"
+        ;;
     *tl-wdr4300*)
         autoprovisionUSBLed="green:wlan2g"
         autoprovisionStatusLed="green:wlan5g"