Fix npu op bug.

[momo609]

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12 out of 16 committers have signed the CLA.

:white_check_mark: momo609
:white_check_mark: Annarine
:white_check_mark: DaGaiBa
:white_check_mark: huhongsun
:white_check_mark: wujiadi1
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:white_check_mark: huangyuan64
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:x: zhuweichen
:x: mikaelchan
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:x: abdu-uy

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