* Marvell Real Time Clock controller

Required properties:
- compatible: should be "mrvl,sa1100-rtc"
- reg: physical base address of the controller and length of memory mapped
  region.
- interrupts: Should be two. The first interrupt number is the rtc alarm
  interrupt and the second interrupt number is the rtc hz interrupt.
- interrupt-names: Assign name of irq resource.

Example:
	rtc: rtc@d4010000 {
		compatible = "mrvl,mmp-rtc";
		reg = <0xd4010000 0x1000>;
		interrupts = <5>, <6>;
		interrupt-name = "rtc 1Hz", "rtc alarm";
	};