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/drmdevice.h b/drmdevice.h
index 491a9b0..da1b961 100644
--- a/drmdevice.h
+++ b/drmdevice.h
@@ -99,6 +99,6 @@
   std::pair<uint32_t, uint32_t> max_resolution_;
   std::map<int, int> displays_;
 };
-}
+}  // namespace android
 
 #endif  // ANDROID_DRM_H_