Trying to get back to a standard of using an actual link for only
the first occurrence of a variable in any given section.
(From yocto-docs rev: 68d80a5dd8481f938892473c4671a9c436e80c8f)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>