ST-Ericsson COH 901 327 Watchdog timer

Required properties:
- compatible: must be "stericsson,coh901327".
- reg: physical base address of the controller and length of memory mapped
  region.
- interrupts: the interrupt used for the watchdog timeout warning.

Optional properties:
- timeout-sec: contains the watchdog timeout in seconds.

Example:

watchdog: watchdog@c0012000 {
	compatible = "stericsson,coh901327";
	reg = <0xc0012000 0x1000>;
	interrupts = <3>;
	timeout-sec = <60>;
};
