Add a new chapter for kernel-lib functions to kernel-api.tmpl.  Add
lib/cmdline.c to the new kernel-lib chapter.
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>