PMIC OTP regulators

Required properties:
- compatible: Must be "regulator-pmic-otp"

Optional properties:
None

Any property defined as part of the core regulator
binding, defined in regulator.txt, can also be used.

Example:

	spmic_ldo3: pmic-otp@0 {
		compatible = "regulator-pmic-otp"
		regulator-name = "spmic-ldo3";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		regulator-boot-on;
	};