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/powercap.cpp b/powercap.cpp
index e435096..ccf2998 100644
--- a/powercap.cpp
+++ b/powercap.cpp
@@ -1,6 +1,7 @@
-#include <cassert>
 #include <phosphor-logging/log.hpp>
 #include <powercap.hpp>
+
+#include <cassert>
 #include <regex>
 
 namespace open_power