ARM: dts: at91: at91sam9g25ek: fix I2C bus unit address

w+arch/arm/dts/.at91sam9g25ek.dtb.pre.tmp:28.25-47.7: Warning (i2c_bus_reg): /ahb/apb/i2c@f8010000/camera@0x30: I2C bus unit address format error, expected "30"
Signed-off-by: NEugen Hristev <eugen.hristev@microchip.com>

arch/arm/dts/at91sam9g25ek.dts

@@ -25,7 +25,7 @@
 			};
 
 			i2c0: i2c@f8010000 {
-				ov2640: camera@0x30 {
+				ov2640: camera@30 {
 					compatible = "ovti,ov2640";
 					reg = <0x30>;
 					pinctrl-names = "default";