Intersil ISL9305/ISL9305H voltage regulator

Required properties:

- compatible: "isil,isl9305" or "isil,isl9305h"
- reg: I2C slave address, usually 0x68.
- regulators: A node that houses a sub-node for each regulator within the
  device. Each sub-node is identified using the node's name, with valid
  values being "dcd1", "dcd2", "ldo1" and "ldo2". The content of each sub-node
  is defined by the standard binding for regulators; see regulator.txt.
- VINDCD1-supply: A phandle to a regulator node supplying VINDCD1.
  VINDCD2-supply: A phandle to a regulator node supplying VINDCD2.
  VINLDO1-supply: A phandle to a regulator node supplying VINLDO1.
  VINLDO2-supply: A phandle to a regulator node supplying VINLDO2.

Optional properties:
- Per-regulator optional properties are defined in regulator.txt

Example

	pmic: isl9305@68 {
		compatible = "isil,isl9305";
		reg = <0x68>;

		VINDCD1-supply = <&system_power>;
		VINDCD2-supply = <&system_power>;
		VINLDO1-supply = <&system_power>;
		VINLDO2-supply = <&system_power>;

		regulators {
			dcd1 {
			        regulator-name = "VDD_DSP";
				regulator-always-on;
                        };
		};
	};
