audio: add bt-mic for audio capture

Bug: 185209822
Test: build pass
Signed-off-by: Carter Hsu <carterhsu@google.com>
Change-Id: I4d37148ed75e57e8077b6a752b190ee87d289a9a
diff --git a/audio/oriole/config/mixer_paths.xml b/audio/oriole/config/mixer_paths.xml
index e56b314..27da7b5 100644
--- a/audio/oriole/config/mixer_paths.xml
+++ b/audio/oriole/config/mixer_paths.xml
@@ -521,6 +521,7 @@
     </path>
 
     <path name="audio-recordC bt-mic">
+        <ctl name="Audio Capture Mic Source" value="BT_MIC"/>
         <ctl name="EP1 TX Mixer BT_TX" value="1"/>
     </path>
 
diff --git a/audio/raven/config/mixer_paths.xml b/audio/raven/config/mixer_paths.xml
index ddc5857..f37ce2b 100644
--- a/audio/raven/config/mixer_paths.xml
+++ b/audio/raven/config/mixer_paths.xml
@@ -548,6 +548,7 @@
     </path>
 
     <path name="audio-recordC bt-mic">
+        <ctl name="Audio Capture Mic Source" value="BT_MIC"/>
         <ctl name="EP1 TX Mixer BT_TX" value="1"/>
     </path>