surfaceflinger: run clang-format on RenderEngine

Run clang-format on all files.  In Program constructor, use mat4()
instead of manually construct a 4x4 identity matrix.

Test: builds
Change-Id: I84e5eec06d103383c715b1f03c521bbcca5bd92c
diff --git a/services/surfaceflinger/RenderEngine/Texture.h b/services/surfaceflinger/RenderEngine/Texture.h
index a07e0c3..56b6b31 100644
--- a/services/surfaceflinger/RenderEngine/Texture.h
+++ b/services/surfaceflinger/RenderEngine/Texture.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#include <stdint.h>
 #include <math/mat4.h>
+#include <stdint.h>
 
 #ifndef SF_RENDER_ENGINE_TEXTURE_H
 #define SF_RENDER_ENGINE_TEXTURE_H