Update .clang-format to latest version from docs

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: Ie6e7f43e7554429704dca86b21320c90aed18791
diff --git a/gpio.cpp b/gpio.cpp
index 6adee9c..81bc4f5 100644
--- a/gpio.cpp
+++ b/gpio.cpp
@@ -18,12 +18,13 @@
 #include <fcntl.h>
 #include <sys/ioctl.h>
 
-#include <cassert>
 #include <phosphor-logging/elog-errors.hpp>
 #include <phosphor-logging/elog.hpp>
 #include <phosphor-logging/log.hpp>
 #include <xyz/openbmc_project/Common/error.hpp>
 
+#include <cassert>
+
 namespace phosphor
 {
 namespace gpio