Initialize device tree (used by PCI patch, to follow).
Signed-off-by: Laurent Vivier <Laurent@lvivier.info>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://coreboot.org/openbios/openbios-devel@255 f158a5a8-5612-0410-a976-696ce0be7e32