kconfig:
 * revert "fix undesirable side effect of adding "visible"
 * http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7ad1227818f09242cfe9bf1845fd24211f5f99bd
(refs #1982)

git-svn-id: file:///var/svn/freetz/trunk@9894 149334a1-2f27-0410-a3b9-fc62619ac1e6