I provided some real detail on this variable. It was woefully brief.
(From yocto-docs rev: 4282fabddc81bf4c0fbd0a641ec4f1e9754660c2)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>