|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.

## WARNINGS

None.

## INFO

**Trailing comma consistency:**
The patch adds trailing commas to both arrays (after `RTE_ETH_SPEED_NUM_400G`), which is good for future additions. This follows the guideline that long lists should have a trailing comma on the last item, though these are relatively short arrays. The consistency is appreciated.

**Pre-existing: Static arrays should be const:**
The `cpfl_supported_speeds` and `idpf_supported_speeds` arrays are declared as `uint32_t []` with global scope but are never modified. Both should be declared `const uint32_t[]` to place them in read-only memory and prevent accidental modification. However, this is **pre-existing code** that the patch does not touch--these declarations exist in the surrounding context, not in the added lines. A separate patch could address this.

**Code review:**
- The patch correctly adds `RTE_ETH_SPEED_NUM_400G` to the speed lookup tables in both drivers.
- The arrays are consistent in format and ordering.
- No correctness issues: this is a simple data table extension.
- No style violations in the added lines.

Review-Result: CLEAN