For the Yocto 1.8 kernel, the meta-data should be audited and cleaned for the new release.
This is an iterative process that continues through the kernel-dev update cycles and is finalized in the versioned kernel recipe. Marking as M3, noting that there is a reasonable possibility that this will bleed through into M4 for the final cleanup warnings about missing options, etc.
This is resolved for the core BSPs in the 1.9 cycle. Other layers continue their work, but they are not tracked by this bugzilla, so we can close it.