global_configuration.h uses std::initializer_list, include the
corresponding header. Add a comment in global_configuration.cpp to close
an anonymous namespace, as mandated by the coding style.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>
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