exynos: audiohal_comv1: Add listenback usage and stream definition

* For use by libaudioproxy

Change-Id: I43b65daa79b18b963c0c1f60b20a5fb913fbf121
Signed-off-by: Francescodario Cuzzocrea <bosconovic@gmail.com>
diff --git a/include/libaudio/audiohal_comv1/audio_tables.h b/include/libaudio/audiohal_comv1/audio_tables.h
index aaf4a6b..be632c5 100644
--- a/include/libaudio/audiohal_comv1/audio_tables.h
+++ b/include/libaudio/audiohal_comv1/audio_tables.h
@@ -89,6 +89,7 @@
     [AUSAGE_FM_RADIO_CAPTURE]       = "fm_radio",
     [AUSAGE_USB_FM_RADIO]           = "usbfm_radio",
     [AUSAGE_REMOTE_MIC]             = "remote_mic",
+    [AUSAGE_LISTENBACK]             = "listenback",
 
 #ifdef SUPPORT_STHAL_INTERFACE
     [AUSAGE_HOTWORD_SEAMLESS]       = "hotword_seamless",
@@ -145,6 +146,7 @@
     [AUSAGE_FM_RADIO_CAPTURE]       = "fm_radio",
     [AUSAGE_USB_FM_RADIO]           = "usbfm_radio",
     [AUSAGE_REMOTE_MIC]             = "remote_mic",
+    [AUSAGE_LISTENBACK]             = "listenback",
 
 #ifdef SUPPORT_STHAL_INTERFACE
     [AUSAGE_HOTWORD_SEAMLESS]       = "hotword_seamless",    //dummy definition not used
diff --git a/include/libaudio/audiohal_comv1/audio_usages.h b/include/libaudio/audiohal_comv1/audio_usages.h
index d0a6c09..338b153 100644
--- a/include/libaudio/audiohal_comv1/audio_usages.h
+++ b/include/libaudio/audiohal_comv1/audio_usages.h
@@ -76,6 +76,7 @@
     AUSAGE_FM_RADIO_CAPTURE, // for FM radio capture
     AUSAGE_USB_FM_RADIO,
     AUSAGE_REMOTE_MIC,
+    AUSAGE_LISTENBACK,
 
     // Voice WakeUp Usages
 #ifdef SUPPORT_STHAL_INTERFACE