Configuring standalone kernel builds (such as those used by verification)
has been done in a completely different way to how the kernel is
configured for project builds. As the kernel gains additional options
it becomes difficult to maintain standalone kernel builds without
tediously exporting these additional options, such tedious work is
what autoconf.h is meant to address
The new configuration strategy requires a include/plat/PLAT/autoconf.h
file to exist for any platform that wants to hae standalone builds
performed on it. This configuration also becomes the *verified*
configuration, and makes it clear for projects to build the kernel
in the verified configuration.
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