ARM: dts: nuvoton: wpcm450: align LED and GPIO keys node name with bindings

Bindings expect the LED and GPIO keys node names to follow certain
pattern, see dtbs_check warnings:

  nuvoton-wpcm450-supermicro-x9sci-ln4f.dtb: gpio-keys: 'uid' does not match any of the regexes: '^(button|event|key|switch|(button|event|key|switch)...

Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20240701164915.577068-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arch/arm/boot/dts/nuvoton/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts

@@ -34,7 +34,7 @@
 		pinctrl-names = "default";
 		pinctrl-0 = <&key_pins>;
 
-		uid {
+		button-uid {
 			label = "UID button";
 			linux,code = <KEY_HOME>;
 			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
@@ -46,12 +46,12 @@
 		pinctrl-names = "default";
 		pinctrl-0 = <&led_pins>;
 
-		uid {
+		led-uid {
 			label = "UID";
 			gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
 		};
 
-		heartbeat {
+		led-heartbeat {
 			label = "heartbeat";
 			gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
 		};