Add audio_input_flags_t to HAL open_input_stream

Change-Id: I14a437e0a93f26002c27aca17e11a771478ea84b
diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 833583c..0419f6a 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -523,7 +523,8 @@
                                   audio_io_handle_t handle,
                                   audio_devices_t devices,
                                   struct audio_config *config,
-                                  struct audio_stream_in **stream_in)
+                                  struct audio_stream_in **stream_in,
+                                  audio_input_flags_t flags __unused)
 {
     struct generic_audio_device *adev = (struct generic_audio_device *)dev;
     struct generic_stream_in *in;