[Feat]enable sfa cp for dsv3.2 (#4702)

### What this PR does / why we need it?
RFC: vllm-project/vllm#30055

### How was this patch tested?
1. enable flashcommon1
export VLLM_ASCEND_ENABLE_FLASHCOMM1=1
2. enable sfa-cp
--additional-config '{ "enable_sfa_cp": true }' \

- vLLM version: v0.12.0
- vLLM main:
vllm-project/vllm@ad32e3e

Signed-off-by: AlvisGong <[email protected]>
Co-authored-by: clrs97 <[email protected]>
Co-authored-by: zzhx1 <[email protected]>
Co-authored-by: hwhaokun <[email protected]>
Co-authored-by: wangxiyuan <[email protected]>

Author: 5 people