ARM: dts: pxa: fix power i2c definition

Add the correct address and size to the device-tree description.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

arch/arm/boot/dts/pxa27x.dtsi

@@ -67,6 +67,8 @@ pwri2c: i2c@40f000180 {
 			reg = <0x40f00180 0x24>;
 			interrupts = <6>;
 			clocks = <&clks CLK_PWRI2C>;
+			#address-cells = <0x1>;
+			#size-cells = <0>;
 			status = "disabled";
 		};