ath79: add led_ prefix for Phicomm K2T LED label

Using the led_ prefix for the node label is now common in ath79,
so also apply it here.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/dts/qca9563_phicomm_k2t.dts

@@ -11,10 +11,10 @@
 	compatible = "phicomm,k2t", "qca,qca9563";
 
 	aliases {
-		led-boot = &status_red;
-		led-failsafe = &status_red;
-		led-running = &status_red;
-		led-upgrade = &status_red;
+		led-boot = &led_status_red;
+		led-failsafe = &led_status_red;
+		led-running = &led_status_red;
+		led-upgrade = &led_status_red;
 	};
 
 	chosen {
@@ -29,7 +29,7 @@
 			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
 		};
 
-		status_red: status_red {
+		led_status_red: status_red {
 			label = "phicomm:red:status";
 			gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
 		};