linux-phytec-fsl

IB/i40iw: Support device FW version string

And remove sysfs support in favor of the core version.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>