ARM: at91/dt: add watchdog properties to kizbox board

Add watchdog specific config for kizbox board.
Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

arch/arm/boot/dts/kizbox.dts

@@ -53,6 +53,12 @@ macb0: ethernet@fffc4000 {
 				status = "okay";
 			};
 
+			watchdog@fffffd40 {
+				timeout-sec = <15>;
+				atmel,max-heartbeat-sec = <16>;
+				atmel,min-heartbeat-sec = <0>;
+				status = "okay";
+			};
 		};
 
 		nand0: nand@40000000 {