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/Description.cpp b/services/surfaceflinger/RenderEngine/Description.cpp
index 706960c..e014406 100644
--- a/services/surfaceflinger/RenderEngine/Description.cpp
+++ b/services/surfaceflinger/RenderEngine/Description.cpp
@@ -33,8 +33,7 @@
     mColorMatrixEnabled = false;
 }
 
-Description::~Description() {
-}
+Description::~Description() {}
 
 void Description::setPremultipliedAlpha(bool premultipliedAlpha) {
     mPremultipliedAlpha = premultipliedAlpha;