update .clang-format

Added the header inclusion order to the .clang-format file generated
these changes.

Change-Id: I4f51a20f469de431ee6a5ba78e3f4da39c980fab
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/src/event.hpp b/src/event.hpp
index a2a2236..f9104f8 100644
--- a/src/event.hpp
+++ b/src/event.hpp
@@ -1,9 +1,9 @@
 #pragma once
 
-#include <phosphor-logging/log.hpp>
 #include "callback.hpp"
 #include "event_manager.hpp"
 
+#include <phosphor-logging/log.hpp>
 #include <sstream>
 
 namespace phosphor
@@ -76,7 +76,8 @@
  *
  *  @tparam T - The C++ type of the property values being traced.
  */
-template <typename T> class Event : public EventBase
+template <typename T>
+class Event : public EventBase
 {
   public:
     Event() = delete;