Fingerprint: Use integral types for remove()

Bug 21282699

Change-Id: I8fdb2112f3f930f080571da6a6b908f5f0581bdd
Signed-off-by: Sasha Levitskiy <sanek@google.com>
diff --git a/fingerprintd/FingerprintDaemonProxy.h b/fingerprintd/FingerprintDaemonProxy.h
index 95c926b..50d30ef 100644
--- a/fingerprintd/FingerprintDaemonProxy.h
+++ b/fingerprintd/FingerprintDaemonProxy.h
@@ -48,8 +48,8 @@
         FingerprintDaemonProxy();
         virtual ~FingerprintDaemonProxy();
         void binderDied(const wp<IBinder>& who);
-        void notifyKeystore(uint8_t *auth_token, size_t auth_token_length);
-        static void hal_notify_callback(fingerprint_msg_t msg);
+        void notifyKeystore(const uint8_t *auth_token, const size_t auth_token_length);
+        static void hal_notify_callback(const fingerprint_msg_t *msg);
 
         static FingerprintDaemonProxy* sInstance;
         fingerprint_module_t const* mModule;