service/mic: actually use the specified device

src/core/frontend/mic.h

@@ -11,6 +11,8 @@
 
 namespace Frontend::Mic {
 
+constexpr char default_device_name[] = "Default";
+
 enum class Signedness : u8 {
     Signed,
     Unsigned,

src/core/hle/service/mic_u.cpp

@@ -326,7 +326,7 @@ struct MIC_U::Impl {
             break;
         case Settings::MicInputType::Real:
 #if HAVE_CUBEB
-            new_mic = std::make_unique<AudioCore::CubebInput>();
+            new_mic = std::make_unique<AudioCore::CubebInput>(Settings::values.mic_input_device);
 #else
             new_mic = std::make_unique<Frontend::Mic::NullMic>();
 #endif