display: Add target specific flag to support Venus color format

Venus color format is not supported on older platforms. Add target
specific flag in display hal and define Venus macros to zero for
older platforms.

Change-Id: I38141ae870e255a0e54ce9fde46fe6cc3415f179
diff --git a/libgralloc/alloc_controller.cpp b/libgralloc/alloc_controller.cpp
index e4d1d68..823c1ae 100644
--- a/libgralloc/alloc_controller.cpp
+++ b/libgralloc/alloc_controller.cpp
@@ -36,6 +36,14 @@
 #include "gr.h"
 #include "comptype.h"
 
+#ifdef VENUS_COLOR_FORMAT
+#include <media/msm_media_info.h>
+#else
+#define VENUS_Y_STRIDE(args...) 0
+#define VENUS_Y_SCANLINES(args...) 0
+#define VENUS_BUFFER_SIZE(args...) 0
+#endif
+
 using namespace gralloc;
 using namespace qdutils;