pci: Add bare metal HW.PCI.Dev implementation

Add a HW.PCI.Dev implementation that assumes direct hardware access,
i.e. its Map() implementations just returns the physical address of
a resource.

Change-Id: I055a05a17e207e8b43aa02d1b39023b027f94f6c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/20551
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
8 files changed