|SUCCESS| net/idpf: add 400G link speed support

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/172209

_AI Code Review_

=== Patch Review: series.patch (via Claude) ===
Review date: 2026-10-28

# DPDK Patch Review

## PATCH: net/idpf: add 400G link speed support

### ERRORS
None identified.

### WARNINGS
None identified.

### INFO

**Release notes missing**

This patch adds a new feature (400G link speed support) to an existing PMD.
According to the guidelines, changes that affect user-visible functionality should be documented
in the release notes (`doc/guides/rel_notes/`).

While this is a small addition, users may want to know that 400G adapters are now properly supported.
Consider adding a brief note in the current release notes file under a section such as:
```
**Updated Intel idpf driver:**

* Added support for reporting 400 Gbps link speed.
```

This is informational as the guidelines note that internal implementation changes
may not require release notes, and this could be viewed as a minor fix to link reporting.
However, documenting it improves visibility for users with 400G hardware.

---

**Code correctness verified:**
- Array extension is syntactically correct
- No resource leaks, use-after-free, or race conditions introduced
- The change matches the commit message description
- Coding style complies with DPDK standards

Review-Result: CLEAN