ramips: move Netgear R6120 LED trigger to DTS

This moves the trigger for the Netgear R6120's wlan2g_green LED from
base-files/etc/board.d/01_leds to the device-tree file.

This has been applied to R6120 based on findings for the very similar
Netgear R6080.

Signed-off-by: Alex Lewontin <alex.c.lewontin@gmail.com>
[merge case in 01_leds, slightly adjust commit message/title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ramips/dts/mt7628an_netgear_r6120.dts

@@ -43,6 +43,7 @@
 		wlan2g_green {
 			label = "r6120:green:wlan2g";
 			gpios = <&gpio 42 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
 		};
 
 		wlan2g_orange {

target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds

@@ -22,7 +22,8 @@ alfa-network,awusfree1)
 	;;
 asus,rt-n10p-v3|\
 asus,rt-n11p-b1|\
-asus,rt-n12-vp-b1)
+asus,rt-n12-vp-b1|\
+netgear,r6120)
 	ucidef_set_led_switch "lan" "lan" "$boardname:green:lan" "switch0" "0xf"
 	ucidef_set_led_switch "wan" "wan" "$boardname:green:wan" "switch0" "0x10"
 	;;
@@ -46,11 +47,6 @@ hiwifi,hc5761a)
 mediatek,linkit-smart-7688)
 	ucidef_set_led_wlan "wifi" "wifi" "linkit-smart-7688:orange:wifi" "phy0tpt"
 	;;
-netgear,r6120)
-	ucidef_set_led_switch "lan" "lan" "$boardname:green:lan" "switch0" "0x0f"
-	ucidef_set_led_switch "wan" "wan" "$boardname:green:wan" "switch0" "0x10"
-	ucidef_set_led_wlan "wlan2g" "WiFi 2.4GHz" "$boardname:green:wlan2g" "phy0tpt"
-	;;
 rakwireless,rak633)
 	set_wifi_led "$boardname:blue:wifi"
 	;;