drm_hwcomposer: Reformat using clang-format-5.0

Run the new clang-format style over the codebase to make things
compatible.

Change-Id: I267d5070929aaa7965d58655da841402debdcb6c
Signed-off-by: Sean Paul <seanpaul@chromium.org>
diff --git a/platformhisi.h b/platformhisi.h
index 4e6cc57..2b2d439 100644
--- a/platformhisi.h
+++ b/platformhisi.h
@@ -41,6 +41,6 @@
 
   const gralloc_module_t *gralloc_;
 };
-}
+}  // namespace android
 
 #endif