I provided some real detail on this variable. It was woefully brief.
(From yocto-docs rev: 6b40243984b7cc69a291b6f90ed04b45b7ce3ac5)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>