clang-format: Update to match docs repo

Update the .clang-format file.
Now includes header sorting and updating PointerAlignment.

Change-Id: I5c7690d8d83cdebe26ff3a73b90a2a8c17dd8054
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/item_updater.cpp b/item_updater.cpp
index 6d90579..0fd2345 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -1,18 +1,21 @@
+#include "config.h"
+
+#include "item_updater.hpp"
+
+#include "images.hpp"
+#include "serialize.hpp"
+#include "version.hpp"
+#include "xyz/openbmc_project/Software/Version/server.hpp"
+
+#include <elog-errors.hpp>
+#include <experimental/filesystem>
 #include <fstream>
+#include <phosphor-logging/elog.hpp>
+#include <phosphor-logging/log.hpp>
 #include <queue>
 #include <set>
 #include <string>
-#include <phosphor-logging/log.hpp>
-#include <phosphor-logging/elog.hpp>
-#include <elog-errors.hpp>
 #include <xyz/openbmc_project/Software/Version/error.hpp>
-#include "config.h"
-#include "item_updater.hpp"
-#include "xyz/openbmc_project/Software/Version/server.hpp"
-#include <experimental/filesystem>
-#include "version.hpp"
-#include "serialize.hpp"
-#include "images.hpp"
 
 namespace phosphor
 {