add .clang-format

Change-Id: I6627b5569c2e0f730be7331403218b823a2c622f
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/sysfs/sysfswrite.cpp b/sysfs/sysfswrite.cpp
index c3e1b03..1ea4c4d 100644
--- a/sysfs/sysfswrite.cpp
+++ b/sysfs/sysfswrite.cpp
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#include <fstream>
-#include <iostream>
-
 #include "sysfswrite.hpp"
 
+#include <fstream>
+#include <iostream>
 
 void SysFsWritePercent::write(double value)
 {