I assume at some point we forgot to remove it when converting an object
from FINAL to DERIVABLE and the anti-pattern just got copied around the
codebase...
Add the IFD regions as child devices and set the region access on the child
devices. Also add read-only SPI descriptor as an HSI attribute and require
FLOCKDN on Intel hardware.
Use the hidden PCI 00:1f.5 device to set the SPIBAR automatically and generate
the quirk file automatically to support more hardware.
