netdevsim: add version fw.mgmt info info_get() and mark as a component

Fix the only component user which is netdevsim. It uses component named
"fw.mgmt" in selftests. So add this version to info_get() output with
version type component.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>