Updated discovery sensors module directory structure

includes/discovery/sensors/frequencies.inc.php

@@ -0,0 +1,13 @@
+<?php
+
+echo 'Frequencies: ';
+
+// Include all discovery modules
+$include_dir = 'includes/discovery/sensors/frequencies';
+require 'includes/include-dir.inc.php';
+
+d_echo($valid['sensor']['frequency']);
+
+check_valid_sensors($device, 'frequency', $valid['sensor']);
+
+echo "\n";