docs/website: add Open Home Foundation to the sponsors

The Open Home Foundation generously sponsored the Buildroot project
end of 2024, credit them.

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

docs/website/sponsors.html

@@ -56,9 +56,27 @@
 	    </div>
 	  </div>
 	</div>
+
+	<div class="col-sm-4">
+	  <div class="panel panel-default panel-sponsor">
+	    <div class="panel-body">
+	      <div class="col-sm-12" style="height: 180px;">
+		<a href="https://www.openhomefoundation.org/">
+		  <img class="img-responsive center-block" src="images/openhomefoundation-logo.png"/>
+		</a>
+	      </div>
+	      <div class="col-sm-12" style="height: 150px;">
+		<a href="https://www.openhomefoundation.org">Open Home
+		Foundation</a> financially sponsored
+		the <a href="/association.html">Buildroot
+		Association</a> in 2024.</div>
+	    </div>
+	  </div>
+	</div>
       </div>
 
     </div>
+    </div>
 
   <div class="panel panel-primary">
     <div class="panel-heading">Past sponsors</div>