ramips: Use dts alias based status led

Also fix several typos in led node name.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

target/linux/ramips/dts/M3.dts

@@ -9,10 +9,14 @@
 	compatible = "poray,m3", "ralink,rt5350-soc";
 	model = "Poray M3";
 
+	aliases {
+		led-status = &led_status;
+	};
+
 	gpio-leds {
 		compatible = "gpio-leds";
 
-		status {
+		led_status: status {
 			label = "m3:blue:status";
 			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
 		};