Fixes [YOCTO #10248]
Provided more accurate descriptions for this variable and task.
(From yocto-docs rev: 422fa705165748230470fffc4fcc543ee38b1f2e)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>