[SCSI] fcoe: Call dev_ethtool_get_settings() in fcoe_link_ok

No need to check phys_dev here, just call dev_ethtool_get_settings() directly
will take care of this.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>