drm/amdgpu: cleanup GMC v9 TLB invalidation

Move the kiq handling into amdgpu_virt.c and drop the fallback.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 files changed