scsi: fnic: Add support for fabric based solicited requests and responses

Add fdls_disc.c to support fabric based solicited requests and responses.

Clean up obsolete code but keep the function template so as to not break
compilation.

Remove duplicate definitions from header files.

Modify definitions of data members.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406112309.8GiDUvIM-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202406120201.VakI9Dly-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202412080837.2JU0r2Ny-lkp@intel.com/


Reviewed-by: Sesidhar Baddela <sebaddel@cisco.com>
Co-developed-by: Gian Carlo Boffa <gcboffa@cisco.com>
Signed-off-by: Gian Carlo Boffa <gcboffa@cisco.com>
Co-developed-by: Arulprabhu Ponnusamy <arulponn@cisco.com>
Signed-off-by: Arulprabhu Ponnusamy <arulponn@cisco.com>
Co-developed-by: Arun Easi <aeasi@cisco.com>
Signed-off-by: Arun Easi <aeasi@cisco.com>
Co-developed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Karan Tilak Kumar <kartilak@cisco.com>
Link: https://lore.kernel.org/r/20241212020312.4786-4-kartilak@cisco.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>