[TRITON] Moe a8w4 gluon gfx1250

[lburzawa]

Motivation

Support MOE a8w4 on gfx1250 using gluon.

Technical Details

• moe a8w4 kernel in gluon for gfx1250
• Rewrite moe a8w4 wrapper to support both triton and gluon kernels

Test Plan

UTs on FFM and IR/asm analysis

Test Result

UTs pass on 350 and 450

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[github-actions]

🏷️ CI Guide

Runs automatically on every PR:

• ✅ Pre-checks (submodule verification, code formatting)
• ✅ Aiter op tests (gfx942 + gfx950)
• ✅ Triton tests (only when aiter/ops/triton/** or related paths are changed)

Extended tests (opt-in via labels):

Label	Tests
ci:sglang	SGLang integration tests
ci:atom	ATOM benchmark (DeepSeek-R1 + GPT-OSS)
ci:multi-gpu	Multi-GPU op tests (8 GPU)
ci:vllm	vLLM benchmark
ci:all	All of the above

Add labels via the sidebar or gh pr edit 2228 --add-label <label>

[azaidy]

LGTM!