Add .clang-format to repo for automated style

Add .clang-format to repo for automated style.  A consistent style
across Openbmc makes the code easier to read and edit.

Change-Id: I7c09792d2482f0be3e01776804347700f3e3e651
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/utils.hpp b/utils.hpp
index 0aeeb32..4b690ab 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -22,5 +22,5 @@
 
 } // namespace inventory
 
-} //namespace vpd
-} //namespace openpower
+} // namespace vpd
+} // namespace openpower