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/platformdrmgeneric.h b/platformdrmgeneric.h
index 8701329..ebe27b7 100644
--- a/platformdrmgeneric.h
+++ b/platformdrmgeneric.h
@@ -35,11 +35,12 @@
   int ReleaseBuffer(hwc_drm_bo_t *bo) override;
 
   uint32_t ConvertHalFormatToDrm(uint32_t hal_format);
+
  private:
   DrmDevice *drm_;
 
   const gralloc_module_t *gralloc_;
 };
-}
+}  // namespace android
 
 #endif