mediatek: GL-MT6000: Add missing LED state definitions

Adjust LED names and provide the OpenWrt status indicator aliases
to actually use LEDs by the OpenWrt boot & sysupgrade processes.

* Name both LEDs clearly by the color
* Add the missing OpenWrt LED status indicator aliases and
  remove the now unnecessary default status from blue LED

After this commit, the LEDs are used as:

* bootloader, really early Linux boot: blue LED is on
* preinit/failsafe: white LED blinks rapidly
* late boot: white LED blinks slowly
* boot completed, running normally: blue LED is on

* sysupgrade: white LED blinks

Signed-off-by: Hannu Nyman <[email protected]>

target/linux/mediatek/dts/mt7986a-glinet-gl-mt6000.dts

@@ -13,6 +13,10 @@
 
 	aliases {
 		serial0 = &uart0;
+		led-boot = &led_white;
+		led-failsafe = &led_white;
+		led-running = &led_blue;
+		led-upgrade = &led_white;
 	};
 
 	chosen {
@@ -51,13 +55,12 @@
 	leds {
 		compatible = "gpio-leds";
 
-		led_run: led@0 {
+		led_blue: led@0 {
 			label = "blue:run";
 			gpios = <&pio 38 GPIO_ACTIVE_LOW>;
-			default-state = "on";
 		};
 
-		led@1 {
+		led_white: led@1 {
 			label = "white:system";
 			gpios = <&pio 37 GPIO_ACTIVE_LOW>;
 		};