Claude review: dt-bindings: display: msm: Document DSI controller and DSI PHY on SC8280XP

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

Patch Review

**Status: Looks good with a minor note**

Adds `patternProperties` for DSI controller and PHY child nodes to the sc8280xp-mdss binding, plus extends the example with DPU output port endpoints for DSI0 and DSI1.

The patternProperties look correctly structured:
```yaml
+  "^dsi@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+    properties:
+      compatible:
+        contains:
+          const: qcom,sc8280xp-dsi-ctrl
```

The example additions add `port@1` and `port@2` for the DPU output ports connecting to DSI0 and DSI1 respectively, which is consistent with the actual DTS in patch 4. The example endpoint labels (`dpu_intf1_out`, `dpu_intf2_out`, `mdss0_dsi0_in`, `mdss0_dsi1_in`) match the convention used in the DTS.

**Minor**: The example could be more complete by including skeleton DSI/PHY child nodes to match the new `patternProperties`, but this isn't strictly required for binding validation.

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Generated by Claude Code Patch Reviewer