ionic: print firmware version on identify

Print the version of the DSC firmware seen when we do a fresh
ident check.  Because the FW can be updated by the external
orchestration system, this helps us track that FW has been
updated on the DSC.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>