[PATCH] o4-imx-nano: Fix dtc warnings

[Fabio Estevam]

Remove the LED unit addresses and reg properties to
fix the following dtc build warnings:

arch/arm/dts/o4-imx-nano.dtb: Warning (reg_format): /leds/led at 0:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
...
arch/arm/dts/o4-imx-nano.dtb: Warning (avoid_default_addr_size): /leds/led at 0: Relying on default #address-cells value

Reported-by: Tom Rini <trini at konsulko.com>
Signed-off-by: Fabio Estevam <festevam at denx.de>
---
 arch/arm/dts/o4-imx-nano.dts | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/arch/arm/dts/o4-imx-nano.dts b/arch/arm/dts/o4-imx-nano.dts
index d1785b7dc702..54d32f9dd47b 100644
--- a/arch/arm/dts/o4-imx-nano.dts
+++ b/arch/arm/dts/o4-imx-nano.dts
@@ -24,40 +24,34 @@
 	leds {
 		compatible = "gpio-leds";
 
-		led at 0 {
+		led0 {
 			color = <LED_COLOR_ID_RED>;
 			gpios = <&pcf8574a 0 GPIO_ACTIVE_LOW>;
-			reg = <0>;
 		};
 
-		led at 1 {
+		led1{
 			color = <LED_COLOR_ID_GREEN>;
 			gpios = <&pcf8574a 1 GPIO_ACTIVE_LOW>;
-			reg = <1>;
 		};
 
-		led at 2 {
+		led2 {
 			gpios = <&pcf8574a 2 GPIO_ACTIVE_LOW>;
 			color = <LED_COLOR_ID_BLUE>;
-			reg = <2>;
 		};
 
-		led at 3 {
+		led3 {
 			color = <LED_COLOR_ID_RED>;
 			gpios = <&pcf8574a 3 GPIO_ACTIVE_LOW>;
-			reg = <3>;
 		};
 
-		led at 4 {
+		led4{
 			color = <LED_COLOR_ID_GREEN>;
 			gpios = <&pcf8574a 4 GPIO_ACTIVE_LOW>;
-			reg = <4>;
 		};
 
-		led at 5 {
+		led5 {
 			color = <LED_COLOR_ID_BLUE>;
 			gpios = <&pcf8574a 5 GPIO_ACTIVE_LOW>;
-			reg = <5>;
 		};
 	};
 
-- 
2.25.1