Bullhead: add mixer path for unprocessed devices

BUG 28751439

Change-Id: Iddfbd09b8d1fa5a66ec10ed43f0043dbb3c586d8
diff --git a/mixer_paths.xml b/mixer_paths.xml
index a7d3120..96cdf0d 100644
--- a/mixer_paths.xml
+++ b/mixer_paths.xml
@@ -2349,4 +2349,20 @@
     </path>
     <!--  voip loopback -->
 
+    <path name="unprocessed-stereo-mic">
+        <path name="voice-rec-dmic-ef" />
+    </path>
+
+    <path name="unprocessed-three-mic">
+        <path name="three-mic" />
+    </path>
+
+    <path name="unprocessed-quad-mic">
+        <path name="quad-mic" />
+    </path>
+
+    <path name="unprocessed-headset-mic">
+        <path name="headset-mic" />
+    </path>
+
 </mixer>