drm/amdgpu: add new amdgpu_gmc_emit_flush_gpu_tlb callback

Add a new GMC function to unify vm flushing.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 files changed