intel_wifi: Export the SMBIOS structure required by intel driver.

Change-Id: I22984a1bc7ca3be6593143af4fce8d5bfe469837
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7295
Reviewed-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)