[AMP Prim OP]support some prim ops for bf16 dtype part3 #54368
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… support_bf16_for_primops_part3
… support_bf16_for_primops_part3
cyber-pioneer
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Jun 8, 2023
Charles-hit
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Jun 13, 2023
…#54368) * support some prim ops bf16 dtype * fix cmake
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Description
Pcard-66975
PR改动：
1.支持assign, erf, fill_any_like, flatten, index_select, top_k, transpose组合算子bf16dtype并添加单测。
2.修复top_k bf16单测报错的问题，由于该算子在numpy端是用fp32进行计算，paddle是移位后变成bfloat16计算，可能会导致结果不一致，所以将numpy端计算时尾数进行移位舍弃计算。