ref-manual: Added the cml1 class.

(From yocto-docs rev: d865a82be42b7c0d4928fbe56b6e05609992c6c2)

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

documentation/ref-manual/ref-classes.xml

@@ -417,6 +417,15 @@
     </para>
 </section>
 
+<section id='ref-classes-cml1'>
+    <title><filename>cml1.bbclass</filename></title>
+
+    <para>
+        The <filename>cml1</filename> class provides basic support for the
+        Linux kernel style build configuration system.
+    </para>
+</section>
+
 <section id='ref-classes-debian'>
     <title>Debian Renaming - <filename>debian.bbclass</filename></title>