Update clang-format

refer: https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Tested: built openpower-occ-control successfully.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I136870023229ff906d471dd4d8debfd404812ff1
diff --git a/utils.hpp b/utils.hpp
index 5e49f83..9b78cd1 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -1,7 +1,8 @@
 #pragma once
 
-#include <optional>
 #include <sdbusplus/bus.hpp>
+
+#include <optional>
 #include <string>
 #include <tuple>