SCSI_IOCTL_GET_PCI 0x5387. Yields the PCI slot name (pci_dev::slot_name) associated with the lower
level (adapter) driver that controls the current device. Up to 8 characters
are output to the location pointed to by 'arg'. If the current device
is not controlled by a PCI device then errno is set to ENXIO.
[This ioctl() was introduced in lk 2.4.4]