Claude review: rust: pci: make Bar lifetime-parameterized

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

Patch Review

Adds a method to convert a lifetime-parameterized `Bar` into a `Devres<Bar>` for cases where runtime revocation is still needed:

```rust
+    pub fn into_devres(self) -> impl PinInit<Devres<Bar<'static, SIZE>>, Error> + use<'bound, SIZE>
+    where
+        Bar<'bound, SIZE>: Send + Sync,
+    {
+        Devres::new_foreign_owned(self.pdev.as_ref(), unsafe {
+            core::mem::transmute::<Bar<'bound, SIZE>, Bar<'static, SIZE>>(self)
+        })
```

**Key unsafe:** The `transmute` from `Bar<'bound>` to `Bar<'static>` erases the lifetime. This is sound because `Devres` guarantees revocation before the device unbinds (which is when `'bound` ends). The safety comment explains this well. The `where Bar<'bound, SIZE>: Send + Sync` bound is important — it prevents unsound transmutes of non-thread-safe types.

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Generated by Claude Code Patch Reviewer