pipa: peripheralmanager: Change pen disable value to 2

* We enable pen with cmd 18, that enables pen with id 2,
  so disable pen with id 2, rather than 0.

Change-Id: I00ba986898908abe95eed73db8369b617f96aa2b

peripheralmanager/src/org/lineageos/xiaomiperipheralmanager/PenUtils.java

@@ -44,7 +44,7 @@ public class PenUtils {
 
     public static void disablePenMode() {
         Log.d(TAG, "disablePenMode: Disable Pen Mode");
-        SystemProperties.set("persist.vendor.parts.pen", "0");
+        SystemProperties.set("persist.vendor.parts.pen", "2");
     }
 
     private static void refreshPenMode() {