documentation: introduce a FAQ section

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

docs/buildroot.html

@@ -32,6 +32,7 @@
       <li><a href="#downloaded_packages">Location of downloaded packages</a></li>
       <li><a href="#add_packages">Adding new packages to Buildroot</a></li>
       <li><a href="#board_support">Creating your own board support</a></li>
+      <li><a href="#faq">Frequently asked questions</a></li>
       <li><a href="#links">Resources</a></li>
     </ul>
 
@@ -1593,6 +1594,11 @@ LIBFOO_POST_PATCH_HOOKS += LIBFOO_POST_PATCH_FIXUP
     <p>If you package software that might be useful for other people, don't
     forget to send a patch to Buildroot developers!</p>
 
+    <h2 id="faq">Frequently asked questions</h2>
+
+    <ul>
+    </ul>
+
     <h2 id="links">Resources</h2>
 
     <p>To learn more about Buildroot you can visit these websites:</p>