blackfin: fix building error by enlarging the memory size

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
diff --git a/include/configs/tcm-bf537.h b/include/configs/tcm-bf537.h
index 627836a..58bcdc8 100644
--- a/include/configs/tcm-bf537.h
+++ b/include/configs/tcm-bf537.h
@@ -55,7 +55,7 @@
 #define CONFIG_EBIU_AMBCTL0_VAL	(B1WAT_7 | B1RAT_11 | B1HT_2 | B1ST_3 | B0WAT_7 | B0RAT_11 | B0HT_2 | B0ST_3)
 #define CONFIG_EBIU_AMBCTL1_VAL	(B3WAT_7 | B3RAT_11 | B3HT_2 | B3ST_3 | B2WAT_7 | B2RAT_11 | B2HT_2 | B2ST_3)
 
-#define CONFIG_SYS_MONITOR_LEN	(512 * 1024)
+#define CONFIG_SYS_MONITOR_LEN	(768 * 1024)
 #define CONFIG_SYS_MALLOC_LEN	(128 * 1024)
 
 
@@ -144,6 +144,7 @@
 #define FLASHBOOT_ENV_SETTINGS \
 	"flashboot=flread 20040000 1000000 300000;" \
 	"bootm 0x1000000\0"
+#define CONFIG_BOARD_SIZE_LIMIT $$((384 * 1024))
 
 
 /*