default or selected kernelversion does not have config value CONFIG_IEEE1394_SBP2.
Result is shown for kernelversion 5.4.229

Storage devices (SBP-2 protocol)

modulename: sbp2.ko

configname: CONFIG_IEEE1394_SBP2

Linux Kernel Configuration
└─>Device Drivers
└─>IEEE 1394 (FireWire) support
└─>Storage devices (SBP-2 protocol)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option enables you to use SBP-2 devices connected to an IEEE
1394 bus. SBP-2 devices include storage devices like harddisks and
DVD drives, also some other FireWire devices like scanners.

You should also enable support for disks, CD-ROMs, etc. in the SCSI
configuration section.

To compile this driver as a module, say M here: the module will be
called sbp2.

sbp2 is superseded by the newer firewire-sbp2 driver. See for
further information on how to switch to the new FireWire drivers.

source code: