Disable multitouch to prevent crash in all apps and frozen workspace while dragging.

Change-Id: I813e0294a9e3b73f43922d8cd6896e71f3664429
diff --git a/src/com/android/launcher2/CellLayoutChildren.java b/src/com/android/launcher2/CellLayoutChildren.java
index 76a6900..0d0a339 100644
--- a/src/com/android/launcher2/CellLayoutChildren.java
+++ b/src/com/android/launcher2/CellLayoutChildren.java
@@ -45,6 +45,9 @@
         super(context);
         mWallpaperManager = WallpaperManager.getInstance(context);
         setLayerType(LAYER_TYPE_HARDWARE, null);
+
+        // Disable multitouch for the workspace
+        setMotionEventSplittingEnabled(false);
     }
 
     public void setCellDimensions(int cellWidth, int cellHeight,