DaVinci Watchdog Timer (WDT) Controller

Required properties:
- compatible : Should be "ti,davinci-wdt"
- reg : Should contain WDT registers location and length

Optional properties:
- timeout-sec : Contains the watchdog timeout in seconds

Examples:

wdt: wdt@2320000 {
	compatible = "ti,davinci-wdt";
	reg = <0x02320000 0x80>;
	timeout-sec = <30>;
};