apm821xx: dts: Unify naming of gpio-led nodes

In DTS Checklist[1] we're now demanding proper generic node names, as
the name of a node should reflect the function of the device and use
generic name for that[2]. Everybody seems to be copy&pasting from DTS
files available in the repository today, so let's unify that naming
there as well and provide proper examples.

1. https://openwrt.org/submitting-patches#dts_checklist
2. https://github.com/devicetree-org/devicetree-specification/blob/master/source/devicetree-basics.rst#generic-names-recommendation

Signed-off-by: Petr Štetiar <[email protected]>
Signed-off-by: Christian Lamparter <[email protected]> [split up]

target/linux/apm821xx/dts/meraki-mr24.dts

@@ -129,7 +129,7 @@
 };
 
 &POB0 {
-	gpio-leds {
+	leds {
 		compatible = "gpio-leds";
 
 		status: power-green {

target/linux/apm821xx/dts/meraki-mx60.dts

@@ -115,7 +115,7 @@
 };
 
 &POB0 {
-	gpio-leds {
+	leds {
 		compatible = "gpio-leds";
 
 		status: power-green {

target/linux/apm821xx/dts/netgear-wndap6x0.dtsi

@@ -142,7 +142,7 @@
 		};
 	};
 
-	LEDS: gpio-leds {
+	LEDS: leds {
 		compatible = "gpio-leds";
 
 		status: power {

target/linux/apm821xx/dts/netgear-wndr4700.dts

@@ -355,7 +355,7 @@
 		};
 	};
 
-	gpio-leds {
+	leds {
 		compatible = "gpio-leds";
 		status: power-green {
 			label = "wndr4700:green:power";

target/linux/apm821xx/dts/wd-mybooklive.dts

@@ -86,7 +86,7 @@
 		no-output;
 	};
 
-	gpio-leds {
+	leds {
 		compatible = "gpio-leds";
 
 		failsafe: power-red {