Cirrus Logic Madera class audio codecs LDO1 regulator driver

Only required if you are using the codec internal LDO1 regulator.

See also the core bindings for the parent MFD driver:
See Documentation/devicetree/bindinge/mfd/madera.txt

Required properties:
  - LDOVDD-supply : Power supply for the LDO1 regulator.

  - cirrus,ldoena-gpios : One entry specifying the GPIO controlling LDOENA.
    As defined in bindings/gpio.txt.

Optional subnodes:
  - ldo1 : Initial data for the LDO1 regulator, as described in
    bindings/regulator/regulator.txt

Example:

codec: cs47l85@0 {
	compatible = "cirrus,cs47l85";

	LDOVDD-supply = <&pmic_vdd1>;
	cirrus,ldoena-gpios = <&gpio 0>;
};