NV: Implemented the nvdrv:a service and the /dev/nvmap device.

src/core/hle/service/nvdrv/nvdrv.cpp

@@ -0,0 +1,16 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/nvdrv/nvdrv.h"
+#include "core/hle/service/nvdrv/nvdrv_a.h"
+
+namespace Service {
+namespace NVDRV {
+
+void InstallInterfaces(SM::ServiceManager& service_manager) {
+    std::make_shared<NVDRV_A>()->InstallAsService(service_manager);
+}
+
+} // namespace nvdrv
+} // namespace Service