Claude review: dt-bindings: display: bridge: Document Renesas R-Car V4H DSC bindings

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Status: Minor comments.**

The binding is well-structured. A few observations:

1. The binding lists `interrupts` as required, but the DSC driver (patch 3) never registers an interrupt handler. If the driver doesn't use interrupts today and this is just for completeness/future use, that's fine, but it's worth noting. Conversely, if the interrupt line is genuinely required for the hardware to function, the driver should at least request it to ensure the interrupt controller configures it properly.

2. The `ports` schema correctly uses `$ref: /schemas/graph.yaml#/properties/ports` and requires both ports. The top-level `unevaluatedProperties: false` is correct here.

3. The example is well-formed and consistent with the SoC DTS added in patch 5.

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