kernel-dev: Added an AR to the beginning for Darren

The concepts in three bulleted items in the old kernel manual
need to be present in this new manual.  I put in a bit of text
right at the beginning of the manual in the form of an AR for
Darren.  This will eventually be removed, but for now it is there
so that it won't slip through the cracks.

(From yocto-docs rev: 85b7300df30837f72d936f8ec1af0b2a4a9c1a88)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/kernel-dev/kernel-dev-intro.xml

@@ -5,6 +5,27 @@
 <chapter id='kernel-dev-intro'>
 <title>Introduction</title>
 
+<para>
+    <emphasis>AR - Darrren Hart:</emphasis>  See if the concepts in these
+    three bullets are adequately covered in somewhere in this manual:
+    <itemizedlist>
+        <listitem><para>Do we convey that our kernel Git repositories
+            have a clear and continuous history, similar to the way the
+            kernel Git repositories for <filename>kernel.org</filename>
+            do.
+            </para></listitem>
+        <listitem><para>Does the manual note that Yocto Project delivers
+            a key set of supported kernel types, where
+            each type is tailored to meet a specific use (e.g. networking,
+            consumer, devices, and so forth).</para></listitem>
+        <listitem><para>Do we convey that the Yocto Project uses a
+            Git branching strategy that, from a
+            developer's point of view, results in a linear path from the
+            baseline kernel.org, through a select group of features and
+            ends with their BSP-specific commits.</para></listitem>
+    </itemizedlist>
+</para>
+
     <section id='kernel-dev-overview'>
         <title>Overview</title>