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Simple display panel

Required properties:
- power-supply: regulator to provide the supply voltage

Optional properties:
- ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
- enable-gpios: GPIO pin to enable or disable the panel
- backlight: phandle of the backlight device attached to the panel

Example:

	panel: panel {
		compatible = "cptt,claa101wb01";
		ddc-i2c-bus = <&panelddc>;

		power-supply = <&vdd_pnl_reg>;
		enable-gpios = <&gpio 90 0>;

		backlight = <&backlight>;
	};