ARM: dts: rza2mevb: Fix LED node names

"make dtbs_check":

arch/arm/boot/dts/r7s9210-rza2mevb.dtb: leds: 'green', 'red' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+'
From schema: Documentation/devicetree/bindings/leds/leds-gpio.yaml

Fix this by prefixing the LED node names with "led-".

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Kieran Bingham <[e-mail]>
Link: https://lore.kernel.org/r/f6e28[e-mail]

arch/arm/boot/dts/r7s9210-rza2mevb.dts

···
 	leds {
 		compatible = "gpio-leds";
 
-		red {
+		led-red {
 			gpios = <&pinctrl RZA2_PIN(PORT6, 0) GPIO_ACTIVE_HIGH>;
 		};
-		green {
+		led-green {
 			gpios = <&pinctrl RZA2_PIN(PORTC, 1) GPIO_ACTIVE_HIGH>;
 		};
 	};