[coreboot] [PATCH][v3] Check that CAR and ROM areas don't collide

[Corey Osgood]

include/arch/x86/cpu.h is probably not the best place for this, but AFAIK it
should be included by and work for all possible targets. Another possible
solution is something like this, I don't think I like it as well, and it
fails the KISS test IMO:

mainboard/Kconfig:
config COREBOOT_ROMSIZE_KB_128
    bool "128 KB"
    depends (0xffffffff - (128 * 1024) > (CONFIG_CARBASE + CONFIG_CARSIZE)))
    help
      Choose this option if you have a 128 KB ROM chip.

-Corey