drm/amdkfd: Set noretry/xnack for GC 9.4.3

For GC 9.4.3, disable retry as default and XNACK can be different
modes per process.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>