Documentation/kernel-docs.txt: move in-kernel docs

There are three places where it mentions in-kernel docs.

Move them to a separate topic.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/kernel-docs.txt

@@ -32,6 +32,53 @@ Document.
 
 Enjoy!
 
+Docs at the Linux Kernel tree
+-----------------------------
+
+The DocBook books should be built with ``make {htmldocs | psdocs | pdfdocs}``.
+The Sphinx books should be built with ``make {htmldocs | pdfdocs | epubdocs}``.
+
+    * Name: **linux/Documentation**
+
+      :Author: Many.
+      :Location: Documentation/
+      :Keywords: text files, Sphinx, DocBook.
+      :Description: Documentation that comes with the kernel sources,
+        inside the Documentation directory. Some pages from this document
+        (including this document itself) have been moved there, and might
+        be more up to date than the web version.
+
+    * Title: **The Kernel Hacking HOWTO**
+
+      :Author: Various Talented People, and Rusty.
+      :Location: Documentation/DocBook/kernel-hacking.tmpl
+      :Keywords: HOWTO, kernel contexts, deadlock, locking, modules,
+        symbols, return conventions.
+      :Description: From the Introduction: "Please understand that I
+        never wanted to write this document, being grossly underqualified,
+        but I always wanted to read it, and this was the only way. I
+        simply explain some best practices, and give reading entry-points
+        into the kernel sources. I avoid implementation details: that's
+        what the code is for, and I ignore whole tracts of useful
+        routines. This document assumes familiarity with C, and an
+        understanding of what the kernel is, and how it is used. It was
+        originally written for the 2.3 kernels, but nearly all of it
+        applies to 2.2 too; 2.0 is slightly different".
+
+    * Title: **Linux Kernel Locking HOWTO**
+
+      :Author: Various Talented People, and Rusty.
+      :Location: Documentation/DocBook/kernel-locking.tmpl
+      :Keywords: locks, locking, spinlock, semaphore, atomic, race
+        condition, bottom halves, tasklets, softirqs.
+      :Description: The title says it all: document describing the
+        locking system in the Linux Kernel either in uniprocessor or SMP
+        systems.
+      :Notes: "It was originally written for the later (>2.3.47) 2.3
+        kernels, but most of it applies to 2.2 too; 2.0 is slightly
+        different". Freely redistributable under the conditions of the GNU
+        General Public License.
+
 On-line docs
 ------------
 
@@ -268,24 +315,6 @@ On-line docs
         want a mechanism that is scalable. This means a large number of
         inactive FDs cost very little in memory and CPU time to manage".
 
-    * Title: **The Kernel Hacking HOWTO**
-
-      :Author: Various Talented People, and Rusty.
-      :Location: in kernel tree, Documentation/DocBook/kernel-hacking.tmpl
-        (must be built as "make {htmldocs | psdocs | pdfdocs})
-      :Keywords: HOWTO, kernel contexts, deadlock, locking, modules,
-        symbols, return conventions.
-      :Description: From the Introduction: "Please understand that I
-        never wanted to write this document, being grossly underqualified,
-        but I always wanted to read it, and this was the only way. I
-        simply explain some best practices, and give reading entry-points
-        into the kernel sources. I avoid implementation details: that's
-        what the code is for, and I ignore whole tracts of useful
-        routines. This document assumes familiarity with C, and an
-        understanding of what the kernel is, and how it is used. It was
-        originally written for the 2.3 kernels, but nearly all of it
-        applies to 2.2 too; 2.0 is slightly different".
-
     * Title: **Writing an ALSA Driver**
 
       :Author: Takashi Iwai <tiwai@suse.de>
@@ -304,21 +333,6 @@ On-line docs
         a brief description of some of the acronyms and terms you may hear
         during discussion of the Linux kernel".
 
-    * Title: **Linux Kernel Locking HOWTO**
-
-      :Author: Various Talented People, and Rusty.
-      :Location: in kernel tree, Documentation/DocBook/kernel-locking.tmpl
-        (must be built as "make {htmldocs | psdocs | pdfdocs})
-      :Keywords: locks, locking, spinlock, semaphore, atomic, race
-        condition, bottom halves, tasklets, softirqs.
-      :Description: The title says it all: document describing the
-        locking system in the Linux Kernel either in uniprocessor or SMP
-        systems.
-      :Notes: "It was originally written for the later (>2.3.47) 2.3
-        kernels, but most of it applies to 2.2 too; 2.0 is slightly
-        different". Freely redistributable under the conditions of the GNU
-        General Public License.
-
     * Title: **Global spinlock list and usage**
 
       :Author: Rick Lindsley.
@@ -565,17 +579,6 @@ Published books
 Miscellaneous
 -------------
 
-    * Name: **linux/Documentation**
-
-      :Author: Many.
-      :URL: Just look inside your kernel sources.
-      :Keywords: anything, DocBook.
-      :Description: Documentation that comes with the kernel sources,
-        inside the Documentation directory. Some pages from this document
-        (including this document itself) have been moved there, and might
-        be more up to date than the web version.
-
-    * Name: **Linux Kernel Source Reference**
 
       :Author: Thomas Graichen.
       :URL: http://marc.info/?l=linux-kernel&m=96446640102205&w=4