Tegra: define CACHE_WRITEBACK_GRANULE for scatterfile

The scatterfile to support armlink, does not seem to support
shift operator. To handle this define CACHE_WRITEBACK_GRANULE with
the direct value.

Change-Id: I19afc7cb9c55a08cb0703f284d91018d3214353f
Signed-off-by: Kalyani Chidambaram <kalyanic@nvidia.com>

plat/nvidia/tegra/include/platform_def.h

@@ -59,6 +59,6 @@
  * integrated and external caches.
  ******************************************************************************/
 #define CACHE_WRITEBACK_SHIFT		6
-#define CACHE_WRITEBACK_GRANULE		(U(1) << CACHE_WRITEBACK_SHIFT)
+#define CACHE_WRITEBACK_GRANULE		(0x40) /* (U(1) << CACHE_WRITEBACK_SHIFT) */
 
 #endif /* PLATFORM_DEF_H */