ThinkPad W541 support, added to osboot.
The build system automatically runs me_cleaner, truncating Intel ME to provide roughly 11.8MB for CBFS where coreboot goes.
Dual graphics not enabled or accounted for; Intel graphics only. GRUB or SeaBIOS payload.
https://notabug.org/osboot/osbmk/commit/7728a9822e7610983d53af071ce39433a2948081
On TODO is to write an actual installation guide. The W541 is a tricky board to flash; I simply couldn't get ISP working at all (no clip). I tried CS high on non-target, HOLD low; very hard to flash.
I de-soldered both ICs, flashed in a socket and then re-soldered. *Works fine*.