ARM: dts: animeo: align gpio-key node names with dtschema

The node names should be generic and DT schema expects certain pattern
(e.g. with key/button/switch).
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220616005333.18491-34-krzysztof.kozlowski@linaro.org

arch/arm/boot/dts/animeo_ip.dts

@@ -168,26 +168,26 @@ tx_red {
 		};
 	};
 
-	gpio_keys {
+	gpio-keys {
 		compatible = "gpio-keys";
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		keyswitch_in {
+		key-switch-in {
 			label = "keyswitch_in";
 			gpios = <&pioB 1 GPIO_ACTIVE_HIGH>;
 			linux,code = <28>;
 			wakeup-source;
 		};
 
-		error_in {
+		key-error-in {
 			label = "error_in";
 			gpios = <&pioB 2 GPIO_ACTIVE_HIGH>;
 			linux,code = <29>;
 			wakeup-source;
 		};
 
-		btn {
+		key-s {
 			label = "btn";
 			gpios = <&pioC 23 GPIO_ACTIVE_HIGH>;
 			linux,code = <31>;