clang-format: update to latest from docs repo

The openbmc/docs/style/cpp/.clang-format has been updated to support
clang-format10, take this opportunity to update it in this repo.

Change-Id: I9e6b9853bf4cd7399b1ae504ea3be5093d763fee
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/utils.hpp b/utils.hpp
index 67c4998..7a4150d 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -1,7 +1,8 @@
 #include "config.h"
 
-#include <map>
 #include <sdbusplus/server.hpp>
+
+#include <map>
 #include <string>
 
 namespace utils