Problems with enabling iwi due to sysctl

# sysctl  legal.intel_iwi.license_ack=1
sysctl: unknown oid 'legal.intel_iwi.license_ack'

On 9.0, the XML type input does not include the intel license.

I switched to 8.2 thinking that it was the release; however, that is not
the case.

What is the fix to this?
I'm using 5.5GB of space for my install; building kernel and world is out
of the question.