Kconfig, Makefile.inc: Remove all traces of ifdfake

Since ifdfake has been deprecated in favor of better alternatives, there
is no need to support it any further. Remove it from the build system.

Change-Id: Id62e95ba72004a1e15453e3eb75f09cb8194feb2
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/28233
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
3 files changed