Claude review: dt-bindings: bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver

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

Patch Review

**Encoding issue in description:**
```yaml
-  The LT9611 and LT9611UXC are bridge devices which convert DSI to HDMI
+  The LT9611、LT9611UXC、LT9611C、LT9611EX and LT9611UXD
+  are bridge devices which convert DSI to HDMI
```
The fullwidth ideographic commas (`、`, U+3001) must be replaced with standard commas (`,`). This is a DT binding document, not CJK text.

**Sharing a binding with a different driver:** The three new compatible strings (`lontium,lt9611c`, `lontium,lt9611ex`, `lontium,lt9611uxd`) are being added to the existing `lontium,lt9611.yaml`, but patch 2 creates an entirely separate driver (`lontium-lt9611c.c`) for these chips. While the hardware is similar enough that the DT properties are the same, this coupling is fragile. If the C/EX/UXD variants ever diverge in DT requirements, it will require disentangling the bindings. This is likely acceptable if the DT maintainers have already agreed to it (the v3 changelog says merging was done per review), but it should be noted.

**Missing example update:** Adding an example for one of the new compatible strings (e.g., `lontium,lt9611c`) would strengthen the binding validation.

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