hal: Enhance VoIP call auto recovery if SSR occurs during call

Enhance support for VoIP auto recovery if SSR occurs during
the VoIP call.

Change-Id: Id69cb9d17fc78fd98754b19bf84539290ff54cd9
diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index d782078..e537377 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -303,6 +303,8 @@
 
 int pcm_ioctl(struct pcm *pcm, int request, ...);
 
+int get_snd_card_state(struct audio_device *adev);
+
 #define LITERAL_TO_STRING(x) #x
 #define CHECK(condition) LOG_ALWAYS_FATAL_IF(!(condition), "%s",\
             __FILE__ ":" LITERAL_TO_STRING(__LINE__)\