add .clang-format

Change-Id: I7c2a527b4751a560703a61fcbe9638b150546af5
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/ipmiwhitelist.hpp b/ipmiwhitelist.hpp
index b07451a..7d096c2 100644
--- a/ipmiwhitelist.hpp
+++ b/ipmiwhitelist.hpp
@@ -1,8 +1,8 @@
 #ifndef __HOST_IPMID_IPMI_WHITELIST_H__
 #define __HOST_IPMID_IPMI_WHITELIST_H_
 
-#include <vector>
 #include <utility>
+#include <vector>
 
 using netfncmd_pair = std::pair<unsigned char, unsigned char>;