drm/amdgpu: apply vcn harvest quirk

This is a following patch to apply the workaround only on
those boards with a bad harvest table in ip discovery.

Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>