Update cache line size call.

target/src/vxWorks.c

@@ -52,7 +52,7 @@ static void __attribute__((constructor)) vxWorksInit (void)
 {
     allocAlignSize = sizeof(size_t);
     stackAlignSize = sizeof(LW_STACK);
-    cacheAlignSize = (size_t)(API_CacheLine() >> 2);
+    cacheAlignSize = (size_t)(API_CacheLine(DATA_CACHE) >> 2);
     vmPageSize     = LW_CFG_VMM_PAGE_SIZE;
 
     creationDate   = __DATE__ __TIME__;