Improve VG350 detection

Cisco VG350s get detected as Aironet 350s, which breaks CDP collection.  This
overrides the behavior to mark VG350s as generic Cisco Layer3 devices.

ChangeLog

@@ -7,6 +7,7 @@ version 3.32 ()
   * Support undefined (noSuchInstance) values in Offline mode
   * Do not init table cache if Cache provided by usera
   * Avoid deep recusion when AUTOLOAD and carp collide
+  * Detect Cisco VG350s as L3 devices instead of APs
 
 version 3.31 (2016-01-22)
 

Info.pm

@@ -1608,6 +1608,9 @@ sub device_type {
         $objtype = 'SNMP::Info::Layer3::Aironet'
             if ( $desc =~ /Aironet/ and $desc =~ /\D(AP4800)\D/ );
 
+	# Override voice gateway device (VG350) showing up as Aironet
+        $objtype = 'SNMP::Info::Layer3::Cisco' if $desc =~ /VG350/;
+
         # Cat6k with older SUPs (hybrid CatOS/IOS?)
         $objtype = 'SNMP::Info::Layer3::C6500' if $desc =~ /(c6sup2|c6sup1)/;