Claude review: drm: bridge: dw_hdmi: Merge top and bottom half IRQ handlers

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

Patch Review

**Status:** Correct.

Since the bottom half only calls `mod_delayed_work()` (which is IRQ-safe), there's no need for a threaded IRQ handler. The merge into `dw_hdmi_hardirq()` is clean:
```c
-	ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
-					dw_hdmi_irq, IRQF_SHARED,
-					dev_name(dev), hdmi);
+	ret = devm_request_irq(dev, irq, dw_hdmi_hardirq, IRQF_SHARED,
+			       dev_name(dev), hdmi);
```

The ACK/unmute of the PHY interrupt is now done conditionally only when HPD is actually handled, which is slightly cleaner. The `intr_stat` write is moved inside the `if (intr_stat)` block to avoid unnecessary register writes.

**Series looks good for merge.** The only patch lacking review tags is 14/22 (bridge detect EDID update) and 15/22 (bridge CEC notifier support), both new in v6.

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Generated by Claude Code Patch Reviewer