[AMDGPU] Support GFX12 VDSDIR instructions WAITVMSRC operand in GCNHazardRecognizer (#77628)

Modify GCNHazardRecognizer::fixLdsDirectVMEMHazard() so the waitvsrc
operand
in gfx12 DS_PARAM_LOAD or DS_DIRECT_LOAD instructions is set
appropriately
depending on whether a hazard is found or not, rather than inserting an
S_WAITCNT_DEPCTR instruction if a hazard needs to be mitigated.

Co-authored-by: Stephen Thomas <Stephen.Thomas@amd.com>