mb/starlabs/starbook: Add variant specific cmos.layout and cmos.default
Add variant specific cmos files, which avoid options like "Thunderbolt"
existing in platforms that don't support such options.
This change also removes entries that were never used, including:
* smi_handler
* usb_always_on
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I359e5c5bbf29eb474f2d3bc42a8e80afc0a5d38a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66296
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>