scsi: lpfc: Fix space indentation in lpfc_xcvr_data_show()

The kernel test robot detected inconsistent indentations for an if
statement block in the lpfc_xcvr_data_show() routine.

This patch reduces the extraneous tabs used for the if statement block in
question.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>