triple buffering is now controled by BoardConfig and enabled by default

use TARGET_DISABLE_TRIPLE_BUFFERING := true to disable
triple buffering.

Change-Id: I9875d6ddefd23c1af9e51e7ee7dec1bacd1e6799
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 4643071..6d77daf 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -110,11 +110,11 @@
     mSurfaceTexture->setFrameAvailableListener(new FrameQueuedListener(this));
     mSurfaceTexture->setSynchronousMode(true);
 
-#ifdef USE_TRIPLE_BUFFERING
-#warning "using triple buffering"
-    mSurfaceTexture->setBufferCountServer(3);
-#else
+#ifdef TARGET_DISABLE_TRIPLE_BUFFERING
+#warning "disabling triple buffering"
     mSurfaceTexture->setBufferCountServer(2);
+#else
+    mSurfaceTexture->setBufferCountServer(3);
 #endif
 }