add live patching sysfs documentation

Signed-off-by: Seth Jennings <sjenning@redhat.com>
remove useless comments

Signed-off-by: Seth Jennings <sjenning@redhat.com>
add API function kernel-doc

Signed-off-by: Seth Jennings <sjenning@redhat.com>
add TODO for struct kernel-doc

Signed-off-by: Seth Jennings <sjenning@redhat.com>