drm/amdgpu/display: add documentation for dmcub_trace_event_en

Was missing when this structure was updated.

Fixes: 46a83eba27 ("drm/amd/display: Add debugfs to control DMUB trace buffer events")
Reviewed-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2021-04-23 16:46:19 -04:00
commit a273f315b9