Add createWithFFDCFiles D-Bus method stub

The D-Bus YAML for this new method in phosphor-dbus-interfaces has
already merged, so this commit is needed to stub out this method in the
implementation of this D-Bus interface so the compile stops failing due to
an un-overridden pure virtual function.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: Ie720d53b05f23f7c9133018ee28c297842a192b2
diff --git a/log_manager.hpp b/log_manager.hpp
index c5ae081..f8c7d38 100644
--- a/log_manager.hpp
+++ b/log_manager.hpp
@@ -267,6 +267,17 @@
         manager.create(message, severity, additionalData);
     }
 
+    void createWithFFDCFiles(
+        std::string message,
+        sdbusplus::xyz::openbmc_project::Logging::server::Entry::Level severity,
+        std::map<std::string, std::string> additionalData,
+        std::vector<std::tuple<CreateIface::FFDCFormat, uint8_t, uint8_t,
+                               sdbusplus::message::unix_fd>>
+            ffdc) override
+    {
+
+    }
+
   private:
     /** @brief This is a reference to manager object */
     internal::Manager& manager;