Claude review: arm64: dts: imx8mq: tqma8mq-mba8mx: Enable HDMI support

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

Patch Review

This board-level DTS enables the DCSS, MHDP bridge, and connects to an HDMI connector.

**Override of `port@1` endpoint:**
```dts
&mhdp {
    status = "okay";
    cdns,bridge-type = <1>;
    ports {
        port@1 {
            reg = <1>;
            mhdp_out: endpoint {
                remote-endpoint = <&hdmi_connector_in>;
                data-lanes = <0 1 2 3>;
            };
        };
    };
};
```
This correctly overrides the SoC-level empty endpoint. `data-lanes = <0 1 2 3>` represents identity mapping.

**Overall this patch is fine**, assuming the SoC-level DTS issues from patch 7 are resolved.

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