Update configs so that they work with NixOS 21.11. Drop `iasl` package since it was replaced with `acpica-tools`. Change-Id: Icb9a382b83b3b3e55126bb0bb508659d11497a05 Signed-off-by: Felix Singer <felixsinger@posteo.net> Reviewed-on: https://review.coreboot.org/c/coreboot/+/59881 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>