block: rename CONFIG_LBD to CONFIG_LBDAF

Follow-up to "block: enable by default support for large devices
and files on 32-bit archs".

Rename CONFIG_LBD to CONFIG_LBDAF to:
- allow update of existing [def]configs for "default y" change
- reflect that it is used also for large files support nowadays

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 26aa64d..601e881 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -1812,7 +1812,7 @@
 		printk(KERN_ERR "EXT3-fs: filesystem on %s:"
 			" too large to mount safely\n", sb->s_id);
 		if (sizeof(sector_t) < 8)
-			printk(KERN_WARNING "EXT3-fs: CONFIG_LBD not "
+			printk(KERN_WARNING "EXT3-fs: CONFIG_LBDAF not "
 					"enabled\n");
 		goto failed_mount;
 	}