|SUCCESS| [v2] net/intel: add 400G link speed support

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/172227

_AI Code Review_

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

# DPDK Patch Review

## ERRORS

None identified.

## WARNINGS

None identified.

## INFO

**Minor style observation - array declarations:**
The patch correctly adds a trailing comma after the new final array entry (`RTE_ETH_SPEED_NUM_400G,`), which follows the DPDK style guideline for long lists (one item per line with trailing comma on last item). This makes future additions easier and is the preferred style. Good practice.

**Scope:**
This patch modifies two driver files under `drivers/net/intel/`, adding a single new speed constant to lookup tables in both. The changes are minimal, consistent, and localized to the specific problem being solved (400G link speed reporting).

Review-Result: CLEAN