documentation: Updated manual revision tables to support 1.4.5 release.

Added a new entry and used "July 2014" as the release date.

(From yocto-docs rev: d6a86bf28419a43a2a692d33c8cedddadebe1dfb)

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

documentation/kernel-dev/kernel-dev.xml

@@ -56,6 +56,11 @@
                 <date>May 2014</date>
                 <revremark>Released with the Yocto Project 1.4.4 Release.</revremark>
             </revision>
+            <revision>
+                <revnumber>1.4.5</revnumber>
+                <date>July 2014</date>
+                <revremark>Released with the Yocto Project 1.4.5 Release.</revremark>
+            </revision>
         </revhistory>
 
     <copyright>