drm/amdgpu: Workaround harvesting info for some navy flounder boards

Some navy flounder boards do not properly mark harvested
VCN instances.  Fix that here.

v2: use IP versions

Fixes: 1b592d00 ("drm/amdgpu/vcn: remove manual instance setting")
Bug: drm/amd#1743


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