target/spc: Only expose PI inquiry bits when supported by fabric

target/spc: Only expose PI inquiry bits when supported by fabric

Only expose standard INQUIRY PROTECT=1 and EVPD=0x86 TYPE1/TYPE3
PI control bits if the session + fabric support DIX PASS operations.

Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>