Qt: adapt the spatializer GUI to the new values

(cherry picked from commit 50bf4ecba24e13d8453a02573d23589e40e28853)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/components/extended_panels.cpp

@@ -1371,12 +1371,17 @@ Spatializer::Spatializer( intf_thread_t *_p_intf, QWidget *_parent )
             spatCtrl[i]->setMaximum( 10 );
             spatCtrl[i]->setValue( 2 );
         }
-        else
+        else if( i < 4 )
         {
             spatCtrl[i]->setMaximum( 10 );
-            spatCtrl[i]->setValue( 0 );
+            spatCtrl[i]->setValue( 2 );
             spatCtrl[i]->setMinimum( -10 );
         }
+        else
+        {
+            spatCtrl[i]->setMaximum( 4 );
+            spatCtrl[i]->setValue( 1 );
+        }
 
         oldControlVars[i] = spatCtrl[i]->value();