Blackfin: enable JFFS summary support for ADI boards

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

include/configs/bfin_adi_common.h

@@ -75,6 +75,9 @@
 # else
 #  define CONFIG_CMD_JFFS2
 # endif
+# ifdef CONFIG_CMD_JFFS2
+#  define CONFIG_JFFS2_SUMMARY
+# endif
 # define CONFIG_CMD_BOOTLDR
 # define CONFIG_CMD_CACHE
 # define CONFIG_CMD_CPLBINFO