* Dialog Semiconductor DA9211/DA9213/DA9215 Voltage Regulator

Required properties:
- compatible: "dlg,da9211" or "dlg,da9213" or "dlg,da9215"
- reg: I2C slave address, usually 0x68.
- interrupts: the interrupt outputs of the controller
- 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 listed below. The content of each sub-node is defined by the
  standard binding for regulators; see regulator.txt.
  BUCKA and BUCKB.

Optional properties:
- enable-gpios: platform gpio for control of BUCKA/BUCKB.
- Any optional property defined in regulator.txt

Example 1) DA9211

	pmic: da9211@68 {
		compatible = "dlg,da9211";
		reg = <0x68>;
		interrupts = <3 27>;

		regulators {
			BUCKA {
				regulator-name = "VBUCKA";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <2000000>;
				regulator-max-microamp 	= <5000000>;
				enable-gpios = <&gpio 27 0>;
			};
			BUCKB {
				regulator-name = "VBUCKB";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <2000000>;
				regulator-max-microamp 	= <5000000>;
				enable-gpios = <&gpio 17 0>;
			};
		};
	};

Example 2) DA9213
	pmic: da9213@68 {
		compatible = "dlg,da9213";
		reg = <0x68>;
		interrupts = <3 27>;

		regulators {
			BUCKA {
				regulator-name = "VBUCKA";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <3000000>;
				regulator-max-microamp 	= <6000000>;
				enable-gpios = <&gpio 27 0>;
			};
			BUCKB {
				regulator-name = "VBUCKB";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <3000000>;
				regulator-max-microamp 	= <6000000>;
				enable-gpios = <&gpio 17 0>;
			};
		};
	};


Example 3) DA9215
	pmic: da9215@68 {
		compatible = "dlg,da9215";
		reg = <0x68>;
		interrupts = <3 27>;

		regulators {
			BUCKA {
				regulator-name = "VBUCKA";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <4000000>;
				regulator-max-microamp 	= <7000000>;
				enable-gpios = <&gpio 27 0>;
			};
			BUCKB {
				regulator-name = "VBUCKB";
				regulator-min-microvolt = < 300000>;
				regulator-max-microvolt = <1570000>;
				regulator-min-microamp 	= <4000000>;
				regulator-max-microamp 	= <7000000>;
				enable-gpios = <&gpio 17 0>;
			};
		};
	};