scsi: target: core: Add emulation for REPORT IDENTIFYING INFORMATION

scsi: target: core: Add emulation for REPORT IDENTIFYING INFORMATION

Add emulation for REPORT IDENTIFYING INFORMATION command using the
configfs file 'pd_text_id_info' in target core module. The configfs file
is created in /sys/kernel/config/target/core/<backend type>/
<backing_store_name>/wwn/.

An emulation function, spc_emulate_report_id_info(), is defined to
return the identification string based on the contents of
'pd_text_id_info'.

The details of the REPORT IDENTIFYING INFORMATION command is defined in
section 6.32 of SPC4.

[mkp: checkpatch tweaks]

Signed-off-by: Gulam Mohamed <gulam.mohamed@oracle.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20251201110716.227588-1-gulam.mohamed@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>