docs: add IRC info

Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/lists.html b/docs/lists.html
index 1c35037..0ac07fa 100644
--- a/docs/lists.html
+++ b/docs/lists.html
@@ -68,7 +68,12 @@
 </p>
 
 
-<br>
+<h1>IRC</h1>
+
+<p>join <a href="irc://chat.freenode.net#dri-devel">#dri-devel channel</a>
+on <a href="http://webchat.freenode.net/">irc.freenode.net</a>
+</p>
+
 
 <h1>OpenGL Forums</h1>