ipq40xx: dts: Unify naming of gpio-keys 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 <ynezz@true.cz>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [split up]

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-a42.dts

@@ -80,7 +80,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-eap1300.dts

@@ -53,7 +53,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-ex61x0v2.dtsi

@@ -76,7 +76,7 @@
 		led-upgrade = &power_amber;
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-rt-ac58u.dts

@@ -118,7 +118,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-wre6606.dts

@@ -114,7 +114,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4019-a62.dts

@@ -83,7 +83,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts

@@ -88,7 +88,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts

@@ -97,7 +97,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-a42.dts

@@ -84,7 +84,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-eap1300.dts

@@ -57,7 +57,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-ex61x0v2.dtsi

@@ -80,7 +80,7 @@
 		led-upgrade = &power_amber;
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-wre6606.dts

@@ -118,7 +118,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4019-a62.dts

@@ -87,7 +87,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4028-wpj428.dts

@@ -92,7 +92,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4029-gl-b1300.dts

@@ -101,7 +101,7 @@
 		};
 	};
 
-	gpio-keys {
+	keys {
 		compatible = "gpio-keys";
 
 		wps {