Add missing native methods to fix boot.

Change-Id: I02e158d7c287c886e218b7a57edd708f9e570695
diff --git a/core/java/com/trustedlogic/trustednfc/android/internal/NativeNfcManager.java b/core/java/com/trustedlogic/trustednfc/android/internal/NativeNfcManager.java
index 4632794..5ff348a 100644
--- a/core/java/com/trustedlogic/trustednfc/android/internal/NativeNfcManager.java
+++ b/core/java/com/trustedlogic/trustednfc/android/internal/NativeNfcManager.java
@@ -96,6 +96,10 @@
      */
     public native void enableDiscovery(int mode);
 
+    public native void disableDiscovery();
+
+    public native void readerDiscovery();
+
     /**
      * Disables an NFCManager mode of operation. Allows to disable tag reader,
      * peer to peer initiator or target modes.