arm64: dts: intel: socfpga_agilex_socdk: align LED node names with dtschema

Align the LED node names with dtschema to silence dtbs_check warnings
like:

    leds: 'hps0', 'hps1', 'hps2' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+'
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NDinh Nguyen <dinguyen@kernel.org>

arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts

@@ -21,17 +21,17 @@
 
 	leds {
 		compatible = "gpio-leds";
-		hps0 {
+		led0 {
 			label = "hps_led0";
 			gpios = <&portb 20 GPIO_ACTIVE_HIGH>;
 		};
 
-		hps1 {
+		led1 {
 			label = "hps_led1";
 			gpios = <&portb 19 GPIO_ACTIVE_HIGH>;
 		};
 
-		hps2 {
+		led2 {
 			label = "hps_led2";
 			gpios = <&portb 21 GPIO_ACTIVE_HIGH>;
 		};