Rework Kconfig file that each variant has its own config option with
their specific selects / configuration and move common selects to
`BOARD_INTEL_COFFEELAKE_COMMON`, which is used as base for each
variant.
Also, move selects from Kconfig.name to Kconfig so that the
configuration is at one place and not distributed over two files.
Built each variant with `BUILD_TIMELESS=1` and all generated
coreboot.rom files remain identical. Excluded the .config file by
disabling `INCLUDE_CONFIG_FILE` to make this reproducible.
Change-Id: I3b3d3cff5ea7a3f4d1c4ddd911240763e4891e06
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56217
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>
e4047354ec