* MAX77686 Real Time Clock controller

This RTC is part of the MAX77686 MFD, which also includes a PMIC device.
The RTC part is in a subnode:

Required properties:
- name: "rtc"

(no other properties are defined at present)

Example:

	max77686 {
		voltage-regulators {
			...
		};
		rtc {
		};
	};
