Update clang-format

Refer:https://github.com/openbmc/docs/blob/ac5d544553934f8083c61c5986a1420261bc8a4c/style/cpp/.clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I593ddf950d14009ab77251fd6d3f248214661765
diff --git a/inc/gpio.hpp b/inc/gpio.hpp
index a5b943a..6f0a67b 100644
--- a/inc/gpio.hpp
+++ b/inc/gpio.hpp
@@ -17,6 +17,7 @@
 
 #include <nlohmann/json.hpp>
 #include <sdbusplus/bus.hpp>
+
 #include <string>
 #include <vector>