[flashinfer] support pcp

Co-authored-by: QiuChunshuo <[email protected]>
Co-authored-by: FENP <[email protected]>
Co-authored-by: LookAround <[email protected]>
Co-authored-by: Jingchun Gao <[email protected]>
Co-authored-by: zhenwenqi2024 <[email protected]>
Signed-off-by: QiuChunshuo <[email protected]>
Signed-off-by: FENP <[email protected]>
Signed-off-by: LookAround <[email protected]>
Signed-off-by: zhenwenqi2024 <[email protected]>

Author: 5 people