Remind firmware of the ESSID to use in a directed scan.  This fixes scanning for hidden APs when we are not comming from iwi_config.
Remind firmware of the ESSID to use in a directed scan.  This fixes scanning
for hidden APs when we are not comming from iwi_config.

Reported by:	Andrew N. Below
MFC after:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase