native frameworks: 64-bit compile issues

- Fix format (print/scanf)
- Suppress unused argument warning messages (bonus)

Change-Id: I05c7724d2aba6da1e82a86000e11f3a8fef4e728
diff --git a/services/sensorservice/OrientationSensor.cpp b/services/sensorservice/OrientationSensor.cpp
index 10b391c..6d85cca 100644
--- a/services/sensorservice/OrientationSensor.cpp
+++ b/services/sensorservice/OrientationSensor.cpp
@@ -69,7 +69,7 @@
     return mSensorFusion.activate(ident, enabled);
 }
 
-status_t OrientationSensor::setDelay(void* ident, int handle, int64_t ns) {
+status_t OrientationSensor::setDelay(void* ident, int /*handle*/, int64_t ns) {
     return mSensorFusion.setDelay(ident, ns);
 }