Added a bit about values being passed through the
update-rc.d command and then a reference to the command's
page.
(From yocto-docs rev: e007414608ed801e440b701d6c43dca955a11611)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>