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/image_manager.hpp b/image_manager.hpp
index ccd82a0..8498c77 100644
--- a/image_manager.hpp
+++ b/image_manager.hpp
@@ -1,7 +1,8 @@
 #pragma once
-#include <sdbusplus/server.hpp>
 #include "version.hpp"
 
+#include <sdbusplus/server.hpp>
+
 namespace phosphor
 {
 namespace software