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Implement queue reset for graphic and compute queue.

v2: use amdgpu_gfx_rlc funcs to enter/exit safe mode.
v3: use gfx_v11_0_request_gfx_index_mutex()
v4: fix mutex handling
Acked-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>