qemu: fix CVE-2023-42467

qemu: fix CVE-2023-42467

QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset
in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not
prevent s->qdev.blocksize from being 256. This stops QEMU and the guest
immediately.

References:
https://nvd.nist.gov/vuln/detail/CVE-2023-42467
https://gitlab.com/qemu-project/qemu/-/issues/1813

Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>