ARM: at91/dt: gpio-keys: address-cells and size-cells properties are not needed

Gpio-keys nodes are not using the "reg" property in their sub nodes.
So, there is no need to define #address-cells and #size-cells properties
in gpio-keys nodes: we remove them in these new boards.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91-sama5d4ek.dts

@@ -244,8 +244,6 @@
 
 	gpio_keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_key_gpio>;

arch/arm/boot/dts/sama5d35ek.dts

@@ -44,8 +44,6 @@
 
 	gpio_keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		pb_user1 {
 			label = "pb_user1";