Added stub for cecd:u service...

I couldn't find any information about this service...

src/core/hle/service/cecd_u.cpp

@@ -0,0 +1,23 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "common/log.h"
+#include "core/hle/hle.h"
+#include "core/hle/service/cecd_u.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Namespace CECD_U
+
+namespace CECD_U {
+
+const Interface::FunctionInfo FunctionTable[] = {
+};
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Interface class
+
+Interface::Interface() {
+    Register(FunctionTable, ARRAY_SIZE(FunctionTable));
+}
+
+} // namespace

src/core/hle/service/cecd_u.h

@@ -0,0 +1,27 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Namespace CECD_U
+
+namespace CECD_U {
+
+class Interface : public Service::Interface {
+public:
+    Interface();
+
+    /**
+     * Gets the string port name used by CTROS for the service
+     * @return Port name of service
+     */
+    std::string GetPortName() const override {
+        return "cecd:u";
+    }
+};
+
+} // namespace

src/core/hle/service/service.cpp

@@ -11,6 +11,7 @@
 #include "core/hle/service/am_net.h"
 #include "core/hle/service/apt_u.h"
 #include "core/hle/service/boss_u.h"
+#include "core/hle/service/cecd_u.h"
 #include "core/hle/service/cfg_i.h"
 #include "core/hle/service/cfg_u.h"
 #include "core/hle/service/csnd_snd.h"
@@ -90,6 +91,7 @@ void Init() {
     g_manager->AddService(new AM_NET::Interface);
     g_manager->AddService(new APT_U::Interface);
     g_manager->AddService(new BOSS_U::Interface);
+    g_manager->AddService(new CECD_U::Interface);
     g_manager->AddService(new CFG_I::Interface);
     g_manager->AddService(new CFG_U::Interface);
     g_manager->AddService(new CSND_SND::Interface);