arm64: dts: rockchip: Clean up gpio-keys nodes

Drop superfluous #address-cells and #size-cells.
Use KEY_POWER define for 116.
Rename sub-nodes to avoid new dtc warnings.
Reported-by: NJulien Chauveau <chauveau.julien@gmail.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NJulien Chauveau <chauveau.julien@gmail.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3368-evb.dtsi

@@ -40,6 +40,7 @@
  *     OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pwm/pwm.h>
 #include "rk3368.dtsi"
 
@@ -105,16 +106,14 @@
 
 	keys: gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwr_key>;
 
-		button@0 {
+		power {
 			wakeup-source;
 			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
 			label = "GPIO Power";
-			linux,code = <116>;
+			linux,code = <KEY_POWER>;
 		};
 	};
 

arch/arm64/boot/dts/rockchip/rk3368-r88.dts

@@ -42,6 +42,7 @@
 
 /dts-v1/;
 #include "rk3368.dtsi"
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "Rockchip R88";
@@ -65,16 +66,14 @@
 
 	keys: gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwr_key>;
 
-		button@0 {
+		power {
 			wakeup-source;
 			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
 			label = "GPIO Power";
-			linux,code = <116>;
+			linux,code = <KEY_POWER>;
 		};
 	};