luci-mod-network: switch.js: fix internal port ordering

Fixes: #3709
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 1c547d36b5)

modules/luci-mod-network/htdocs/luci-static/resources/view/network/switch.js

@@ -359,7 +359,7 @@ return L.view.extend({
 			}
 
 			port_opts.sort(function(a, b) {
-				return a.option < b.option;
+				return a.option > b.option;
 			});
 		}