scsi: lpfc: Fix reftag generation sizing errors

An LBA is 8 bytes. The driver generates a reftag from the LBA but the
reftag is 4 bytes. Thus scsi_get_lba() could return a value that exceeds
our reftag size.

Fix by converting all the code to calling the common routine
t10_pi_ref_tag() which returns a u32, thus ensuring a consistent 4byte
value.  Also correct a few code lines that access LBA directly and ensure
64-bit data types are used.

Link: https://lore.kernel.org/r/20210301171821.3427-4-jsmart2021@gmail.com


Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>