|SUCCESS| mailmap: update Khadem Ullah email address

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/167081

_AI Code Review_

=== Patch Review: series.patch (via Claude) ===
Review date: 2026-07-31

# DPDK Patch Review

## Summary
This patch updates a contributor's email address in the `.mailmap` file. The change is administrative in nature and does not modify any code.

## Findings

**No issues found.**

This patch:
- Updates only the `.mailmap` file to redirect an old email address to a new one
- Contains no code changes
- Does not affect any DPDK functionality, API, or ABI
- Requires no tests, documentation updates, or release notes
- Follows the standard mailmap format (`new-email <old-email>`)

The change is purely administrative and complies with all applicable DPDK guidelines.