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/static/item_updater_helper.cpp b/static/item_updater_helper.cpp
index 572cb9c..e087d71 100644
--- a/static/item_updater_helper.cpp
+++ b/static/item_updater_helper.cpp
@@ -1,4 +1,5 @@
 #include "config.h"
+
 #include "item_updater_helper.hpp"
 
 namespace phosphor