Currently all X500EM* MAC types fall through to the default case and get
reported as non-SFP regardless of media type, which isn't correct.
Fixes: 0790adeb5675 ("ixgbe/base: support X550em_a device")
Cc: stable@dpdk.org
Signed-off-by: Stephen Douthit <stephend@silicom-usa.com>
Signed-off-by: Jeff Daly <jeffd@silicom-usa.com>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>