* Freescale MXC Electrophoretic Display Controller (EPDC)

Required properties:
- compatible: Should be "fsl,<chip>-epdc".  Supported chips include
  imx6dl and imx6sl
- reg: Address and length of the register set for EPDC
- interrupts: Should contain EPDC interrupts
- clocks: the clocks for EPDC
- pinctrl-names: should be "default"
- pinctrl-0: should be pinctrl_ipu1_1 or pinctrl_ipu2_1, which depends on the
  IPU connected.
- V3P3_supply: power supply for EPDC_PWRCTRL0 from pmic
- VCOM_supply: power supply for EPDC_VCOM0 from pmic
- DISPLAY_supply: power supply enable for pmic

Examples:

imx6_epdc@0x020f8000 {
	compatible = "fsl,imx6dl-epdc";
	reg = <0x020f8000 4000>;
	interrupts = <0 97 0x04>;
	clocks = <&clks 133>, <&clks 137>;  /* ipu2, ipu2_di1 */
	clock-names = "epdc-axi", "epdc-pix";
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_epdc_0>;
	V3P3_supply = <&V3P3_reg>;
	VCOM_supply = <&VCOM_reg>;
	DISPLAY_supply = <&DISPLAY_reg>;
	status = "disabled";
};