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/occ_command.hpp b/occ_command.hpp
index 42962d9..3ea9b19 100644
--- a/occ_command.hpp
+++ b/occ_command.hpp
@@ -6,6 +6,7 @@
 #include <org/open_power/OCC/PassThrough/server.hpp>
 #include <sdbusplus/bus.hpp>
 #include <sdbusplus/server/object.hpp>
+
 #include <string>
 
 namespace open_power