Claude review: drm/panthor: Reduce padding in gems debugfs for refcount

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

Patch Review

This is a purely cosmetic patch that reduces the refcount column width from 16 to 11 characters:

```c
-	seq_printf(m, "%-32s%-16d%-11d%-11d%-16zd%-16zd0x%-16lx",
+	seq_printf(m, "%-32s%-16d%-11d%-11d%-16zd%-16zd0x%-16lx",
```

Wait — looking more carefully at the diff: in the base from patch 1, the format string was `%-16d` for refcount, and this patch changes it to `%-11d`. The header/separator lines are updated consistently to match the narrower column.

The rationale is sound: `kref_read` returns an `unsigned int`, but realistically refcount values are small. The commit message says it "can only ever contain a 10-digit decimal number" (UINT_MAX is 4294967295, 10 digits), so 11 chars (10 + separator) is correct.

The header, separator, and footer lines are all consistently shortened by 5 characters. Looks correct.

Already has `Reviewed-by: Steven Price <steven.price@arm.com>`.

**No issues with this patch.**

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