Sysbuild now generates a .config.sysbuild config file which specifies
settings controlled by sysbuild.
Any setting specified in this .config will overrule user provided
setting, and a warning will be raised if the sysbuild controlled value
is different from the value specified by the user.
This has the following benefits:
- Allow sysbuild to control any build setting without adjustments to
the existing Kconfig tree
- Allow sysbuild to adjust settings based on knowledge regarding enabled
images / bootloaders.
- Cleanup CMake code, as settings in sysbuild no longer needs to be
propagated using CMake cache variables.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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