avmodel: select correct audio input

Change-Id: I906b310ed0f8c9d8bc48bea03921457f5d5246ac
Reviewed-by: Philippe Gorley <philippe.gorley@savoirfairelinux.com>

src/avmodel.cpp

@@ -327,7 +327,7 @@ void
 AVModel::setInputDevice(const std::string& name)
 {
     int idx = ConfigurationManager::instance()
-        .getAudioOutputDeviceIndex(name.c_str());
+        .getAudioInputDeviceIndex(name.c_str());
     ConfigurationManager::instance().setAudioInputDevice(idx);
 }