native frameworks: 64-bit compile issues

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

Change-Id: I05c7724d2aba6da1e82a86000e11f3a8fef4e728
diff --git a/services/sensorservice/SensorInterface.h b/services/sensorservice/SensorInterface.h
index c295e22..3e76377 100644
--- a/services/sensorservice/SensorInterface.h
+++ b/services/sensorservice/SensorInterface.h
@@ -40,7 +40,7 @@
     virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0;
 
     // Not all sensors need to support batching.
-    virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
+    virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs,
                            int64_t maxBatchReportLatencyNs) {
         if (maxBatchReportLatencyNs == 0) {
             return setDelay(ident, handle, samplingPeriodNs);
@@ -48,13 +48,13 @@
         return -EINVAL;
     }
 
-    virtual status_t flush(void* ident, int handle) {
+    virtual status_t flush(void* /*ident*/, int /*handle*/) {
         return -EINVAL;
     }
 
     virtual Sensor getSensor() const = 0;
     virtual bool isVirtual() const = 0;
-    virtual void autoDisable(void *ident, int handle) { }
+    virtual void autoDisable(void* /*ident*/, int /*handle*/) { }
 };
 
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