Enable symbol tests

Change-Id: I6bd036bf00c8051c8ff728ee60562c4ebd222160

src/device_util.h

@@ -32,7 +32,7 @@ THE SOFTWARE.
 #define NUM_PAGES_PER_THREAD  16
 #define SIZE_OF_PAGE          64
 #define NUM_THREADS_PER_CU    64
-#define NUM_CUS_PER_GPU       64
+#define NUM_CUS_PER_GPU       64  // Specific for r9 Nano
 #define NUM_PAGES NUM_PAGES_PER_THREAD * NUM_THREADS_PER_CU * NUM_CUS_PER_GPU
 #define SIZE_MALLOC NUM_PAGES * SIZE_OF_PAGE
 #define SIZE_OF_HEAP SIZE_MALLOC