Issue 2071329: audio track is shorter than video track for video capture on sholes

Add API to retrieve number of frames dropped by audio input kernel driver.

Submitted on behalf of Masaki Sato <masaki.sato@motorola.com>
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 42bb4df..d0ccc505 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -233,6 +233,7 @@
     // necessary to check returned status before using the returned values.
     static status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int stream = DEFAULT);
 
+    static unsigned int  getInputFramesLost(audio_io_handle_t ioHandle);
     //
     // AudioPolicyService interface
     //