add .clang-format

Add .clang-format for automatic style.

Change-Id: I6d240009370179b5b8f1f646b0476a059ec6aa85
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/procedures/p9/set_sync_fsi_clock_mode.cpp b/procedures/p9/set_sync_fsi_clock_mode.cpp
index b17aec5..4ffff9f 100644
--- a/procedures/p9/set_sync_fsi_clock_mode.cpp
+++ b/procedures/p9/set_sync_fsi_clock_mode.cpp
@@ -27,7 +27,6 @@
 using namespace openpower::cfam::p9;
 using namespace openpower::targeting;
 
-
 /**
  * @Brief Sets the P9 FSI clock to synchronous mode.
  */
@@ -36,13 +35,11 @@
     Targeting targets;
     const auto& master = *(targets.begin());
 
-    //Set bit 31 to 0
+    // Set bit 31 to 0
     writeRegWithMask(master, P9_LL_MODE_REG, 0x00000000, 0x00000001);
 }
 
-
 REGISTER_PROCEDURE("setSyncFSIClock", setSynchronousFSIClock);
 
-}
-}
-
+} // namespace p9
+} // namespace openpower