powerpc/p5040: enable PBL tool support

Provided a default RCW for P5040, then it can use PBL to build
ramboot image.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/include/configs/corenet_ds.h b/include/configs/corenet_ds.h
index 5cc9b5a..2e2d439 100644
--- a/include/configs/corenet_ds.h
+++ b/include/configs/corenet_ds.h
@@ -38,6 +38,8 @@
 #define CONFIG_PBLRCW_CONFIG $(SRCTREE)/board/freescale/corenet_ds/rcw_p4080ds.cfg
 #elif defined(CONFIG_P5020DS)
 #define CONFIG_PBLRCW_CONFIG $(SRCTREE)/board/freescale/corenet_ds/rcw_p5020ds.cfg
+#elif defined(CONFIG_P5040DS)
+#define CONFIG_PBLRCW_CONFIG $(SRCTREE)/board/freescale/corenet_ds/rcw_p5040ds.cfg
 #endif
 #endif