Add AIE2P (npu2) elementwise herd width: 8 threads for 8-column array #284

Job	Run time
Build triton wheel Windows (Python 3.10)	43m 42s
Build triton wheel (Python 3.14)	49m 46s
Build triton wheel (Python 3.11)	52m 9s
Build triton wheel Windows (Python 3.11)	51m 0s
Build triton wheel (Python 3.13)	50m 15s
Build triton wheel Windows (Python 3.12)	49m 45s
Build triton wheel (Python 3.10)	48m 13s
Build triton wheel (Python 3.12)	43m 25s
Check for new commits	-8s
Publish wheels to GitHub release	1s
	6h 28m 8s

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