drm/amdgpu: Fix warning when lockdep is enabled

Set ignore bit to satisfy locpdep.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
xinhui pan 2019-03-11 14:28:06 +08:00 • committed by Alex Deucher
commit 2b9505e353