arm64: dts: freescale: align led node names with dtschema

The node names should be generic and DT schema expects certain pattern
with 'led'.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls1088a-ten64.dts

@@ -52,17 +52,17 @@ button-admin {
 	leds {
 		compatible = "gpio-leds";
 
-		sfp1down {
+		led-0 {
 			label = "ten64:green:sfp1:down";
 			gpios = <&gpio3 11 GPIO_ACTIVE_HIGH>;
 		};
 
-		sfp2up {
+		led-1 {
 			label = "ten64:green:sfp2:up";
 			gpios = <&gpio3 12 GPIO_ACTIVE_HIGH>;
 		};
 
-		admin {
+		led-2 {
 			label = "ten64:admin";
 			gpios = <&sfpgpio 12 GPIO_ACTIVE_HIGH>;
 		};

arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts

@@ -20,13 +20,13 @@ leds {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_led>;
 
-		user1 {
+		led-1 {
 			label = "TestLed601";
 			gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "mmc0";
 		};
 
-		user2 {
+		led-2 {
 			label = "TestLed602";
 			gpios = <&gpio4 10 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "heartbeat";