kernel-doc: fix some errors

- Delete fs.xml from DOCBOOKS to fix an error.
     Commit e3ff797c added fs.xml to DOCBOOKS
     but missed to add doc/DocBook/fs.tmpl.
  - Fix the location of include guard in include/linker_lists.h.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reported-by: Abraham Varricatt <abraham.varricatt@vvdntech.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/DocBook/Makefile b/doc/DocBook/Makefile
index 3077134..44afc47 100644
--- a/doc/DocBook/Makefile
+++ b/doc/DocBook/Makefile
@@ -6,7 +6,7 @@
 # To add a new book the only step required is to add the book to the
 # list of DOCBOOKS.
 
-DOCBOOKS := fs.xml linker_lists.xml stdio.xml
+DOCBOOKS := linker_lists.xml stdio.xml
 
 ###
 # The build process is as follows (targets):