t400 free coreboot

Main goal of this release is to have the most possible free (as in freedom) code, removing support to vga and intel wifi cards and bluetooth. Main benefit is the graphic initialization with Seabios and libgfxinit working great at the correct resolution 1280x800.

seabios with add-int -i 1000 -n etc/boot-menu-wait and bootsplash working on libgfxinit
no support to intel wifi or bluetooth
added flashregion_0_flashdescriptor.bin from libreboot
ich9fdgbe_8m.bin with 00:11:22:33:44:55 mac address
No secondary payloads added
capable to boot any linux, bsd and windows