ixgbe: Add X552 iXFI configuration helper function

ixgbe: Add X552 iXFI configuration helper function

Orabug: 24568240

X553 doesn't need all the initialization that X552 did for iXFI. This
patch will allow native SPI SFP+ to work with X553 devices.  Future
patches will add additional configuration as needed.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 0c1b7de4f33f64665c45a15980a02582740034ff)
Signed-off-by: Brian Maly <brian.maly@oracle.com>