Qt/Mapping: Implement Microphone widget

Source/Core/DolphinQt2/Config/Mapping/GCMicrophone.cpp

@@ -0,0 +1,45 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <QFormLayout>
+#include <QGroupBox>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+
+#include "DolphinQt2/Config/Mapping/GCMicrophone.h"
+
+#include "InputCommon/InputConfig.h"
+
+#include "Core/HW/GCPad.h"
+#include "Core/HW/GCPadEmu.h"
+
+GCMicrophone::GCMicrophone(MappingWindow* window) : MappingWidget(window)
+{
+  CreateMainLayout();
+}
+
+void GCMicrophone::CreateMainLayout()
+{
+  m_main_layout = new QHBoxLayout();
+
+  m_main_layout->addWidget(
+      CreateGroupBox(tr("Microphone"), Pad::GetGroup(GetPort(), PadGroup::Mic)));
+
+  setLayout(m_main_layout);
+}
+
+void GCMicrophone::LoadSettings()
+{
+  Pad::LoadConfig();
+}
+
+void GCMicrophone::SaveSettings()
+{
+  Pad::GetConfig()->SaveConfig();
+}
+
+InputConfig* GCMicrophone::GetConfig()
+{
+  return Pad::GetConfig();
+}