ARM: dts: keystone: add watchdog entry

Add watchdog entry to keystone device tree.
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

arch/arm/boot/dts/keystone.dtsi

@@ -208,5 +208,11 @@
 				usb-phy = <&usb_phy>, <&usb_phy>;
 			};
 		};
+
+		wdt: wdt@022f0080 {
+			compatible = "ti,keystone-wdt","ti,davinci-wdt";
+			reg = <0x022f0080 0x80>;
+			clocks = <&clkwdtimer0>;
+		};
 	};
 };