drm/amdkfd: Fix instruction hazard in gfx12 trap handler

VALU instructions with SGPR source need wait states to avoid hazard
with SALU using different SGPR.

v2: Eliminate some hazards to reduce code explosion

Signed-off-by: Jay Cornwall <[email protected]>
Reviewed-by: Lancelot Six <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: jcornwallAMD