Qualcomm Technologies,Inc. Adreno/Snapdragon hdmi display manager

Required properties:
- compatible: "qcom,hdmi-display"
- label: label of this display manager

Optional properties:
- qcom,display-type: display type of this manager. It could be "primary",
  "secondary", "tertiary", etc.
- qcom,non-pluggable: Boolean to indicate if display is non pluggable.
- qcom,customize-modes: Customized modes when it's non pluggable display.
- qcom,customize-mode-id: Customized mode node.
- qcom,mode-name: String which indicates the mode name which shall be used
   by the connector in non pluggable mode. Refer the example below for details.
   In pluggable mode, the modes shall be filled up
   after edid parsing.
- qcom,mode-h-active: Horizontal active pixels for this mode.
- qcom,mode-h-front-porch: Horizontal front porch in pixels for this mode.
- qcom,mode-h-pulse-width: Horizontal sync width in pixels for this mode.
- qcom,mode-h-back-porch: Horizontal back porch in pixels for this mode.
- qcom,mode-h-active-high: Boolean to indicate if mode horizontal polarity is active high.
- qcom,mode-v-active: Vertical active lines for this mode.
- qcom,mode-v-front-porch: Vertical front porch in lines for this mode.
- qcom,mode-v-pulse-width: Vertical sync width in lines for this mode.
- qcom,mode-v-back-porch: Vertical back porch in lines for this mode.
- qcom,mode-v-active-high: Boolean to indicate if mode vertical polarity is active high.
- qcom,mode-refersh-rate: Mode refresh rate in hertz.
- qcom,mode-clock-in-khz: Mode pixel clock in KHz.

Example:

/ {
	...

	hdmi_display: qcom,hdmi-display {
		compatible = "qcom,hdmi-display";
		label = "hdmi_display";
		qcom,display-type = "secondary";
		qcom,non-pluggable;
		qcom,customize-modes {
			qcom,customize-mode-id@0 {
				qcom,mode-name = "3840x2160@30Hz";
				qcom,mode-h-active = <3840>;
				qcom,mode-h-front-porch = <176>;
				qcom,mode-h-pulse-width = <88>;
				qcom,mode-h-back-porch = <296>;
				qcom,mode-h-active-high;
				qcom,mode-v-active = <2160>;
				qcom,mode-v-front-porch = <8>;
				qcom,mode-v-pulse-width = <10>;
				qcom,mode-v-back-porch = <72>;
				qcom,mode-v-active-high;
				qcom,mode-refersh-rate = <30>;
				qcom,mode-clock-in-khz = <297000>;
			};
		};
	};

};
