build.sh: add deviceinfo_skip_dtbo_partition option
It allows to skip copying dtbo.img into resulting device tarball for the case device requires signed dtbo.img to boot, but having dtbo configured is still useful to produce working recovery.img.
It allows to skip copying dtbo.img into resulting device tarball for the case device requires signed dtbo.img to boot, but having dtbo configured is still useful to produce working recovery.img.