ramips: use phy trigger for various Netgear boards

This commit switches the default trigger for the WiFi LED from a netdev
trigger on "wlan0" to a wireless-phy based trigger. THis allows the LED
to work, even when the wireless interface is not named "wlan0" without
modifiying the LED settings.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit fa46c9b208fe3833f085e9f6ddf7c492b16f6c34)

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

@@ -278,7 +278,6 @@ r6220|\
 netgear,r6350|\
 wndr3700v5)
 	ucidef_set_led_switch "wan" "wan" "$boardname:green:wan" "switch0" "0x10"
-	set_wifi_led "$boardname:green:wifi"
 	;;
 re350-v1)
 	ucidef_set_led_netdev "wifi2g" "Wifi 2.4G" "$boardname:blue:wifi2G" "wlan0"

target/linux/ramips/dts/R6220.dtsi

@@ -44,6 +44,7 @@
 
 		led_wifi: wifi {
 			gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
 		};
 
 		led_wps: wps {

target/linux/ramips/dts/R6350.dts

@@ -49,6 +49,7 @@
 		wifi {
 			label = "r6350:green:wifi";
 			gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
 		};
 	};