Kconfig shows a warning about this, but we want to catch it earlier
and halt the build.
Change-Id: I0acce1d40a6ca2b212c638bdb1ec65de5bd4d726
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/18970
Tested-by: build bot (Jenkins)
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
aa206478cb