ARM: dts: kirkwood: Remove address from gpio-i2c unit name

gpio-i2c does not have a reg property, just a list of gpios.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm/boot/dts/kirkwood-km_common.dtsi

@@ -24,7 +24,7 @@ serial@12000 {
 		};
 	};
 
-	i2c@0 {
+	i2c {
 		compatible = "i2c-gpio";
 		gpios = < &gpio0 8 GPIO_ACTIVE_HIGH		/* sda */
 			  &gpio0 9 GPIO_ACTIVE_HIGH>;		/* scl */