add .clang-format

Add .clang-format for automatic style.

Change-Id: I6d240009370179b5b8f1f646b0476a059ec6aa85
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/filedescriptor.cpp b/filedescriptor.cpp
index 89f77e2..c96249e 100644
--- a/filedescriptor.cpp
+++ b/filedescriptor.cpp
@@ -13,13 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include <stdexcept>
-#include <unistd.h>
-#include <phosphor-logging/elog.hpp>
-#include <phosphor-logging/elog-errors.hpp>
-#include <xyz/openbmc_project/Common/File/error.hpp>
 #include "filedescriptor.hpp"
 
+#include <unistd.h>
+
+#include <phosphor-logging/elog-errors.hpp>
+#include <phosphor-logging/elog.hpp>
+#include <stdexcept>
+#include <xyz/openbmc_project/Common/File/error.hpp>
+
 namespace openpower
 {
 namespace util
@@ -37,13 +39,11 @@
     {
         using metadata = xyz::openbmc_project::Common::File::Open;
 
-        elog<file_error::Open>(
-                metadata::ERRNO(errno),
-                metadata::PATH(path.c_str()));
+        elog<file_error::Open>(metadata::ERRNO(errno),
+                               metadata::PATH(path.c_str()));
     }
 }
 
-
 FileDescriptor::~FileDescriptor()
 {
     if (fd >= 0)
@@ -52,5 +52,5 @@
     }
 }
 
-}
-}
+} // namespace util
+} // namespace openpower