audio: Add support for unprocessed audio source

Add support to capture unprocessed audio.

Change-Id: Iffafe1769577e42973562d8f72157a756ee2adf7
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 3cd4361..52f0bac 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -179,6 +179,11 @@
     SND_DEVICE_IN_SPEAKER_QMIC_AEC_NS,
     SND_DEVICE_IN_THREE_MIC,
     SND_DEVICE_IN_HANDSET_TMIC,
+    SND_DEVICE_IN_UNPROCESSED_MIC,
+    SND_DEVICE_IN_UNPROCESSED_STEREO_MIC,
+    SND_DEVICE_IN_UNPROCESSED_THREE_MIC,
+    SND_DEVICE_IN_UNPROCESSED_QUAD_MIC,
+    SND_DEVICE_IN_UNPROCESSED_HEADSET_MIC,
     SND_DEVICE_IN_END,
 
     SND_DEVICE_MAX = SND_DEVICE_IN_END,