[media] dt-bindings: Add Renesas R-Car FDP1 bindings

Renesas R-Car Fine Display Processor (FDP1)

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The FDP1 is a de-interlacing module which converts interlaced video to

progressive video. It is capable of performing pixel format conversion between

YCbCr/YUV formats and RGB formats. Only YCbCr/YUV formats are supported as

an input to the module.

Required properties:

 - compatible: must be "renesas,fdp1"

 - reg: the register base and size for the device registers

 - interrupts : interrupt specifier for the FDP1 instance

 - clocks: reference to the functional clock

Optional properties:

 - power-domains: reference to the power domain that the FDP1 belongs to, if

                  any.

 - renesas,fcp: a phandle referencing the FCP that handles memory accesses

                for the FDP1. Not needed on Gen2, mandatory on Gen3.

Please refer to the binding documentation for the clock and/or power domain

providers for more details.

Device node example

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	fdp1@fe940000 {

		compatible = "renesas,fdp1";

		reg = <0 0xfe940000 0 0x2400>;

		interrupts = <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&cpg CPG_MOD 119>;

		power-domains = <&sysc R8A7795_PD_A3VP>;

		renesas,fcp = <&fcpf0>;

	};