[MTD] Allow variable block sizes in mtd_blkdevs

Currently, mtd_blkdevs enforces a block size of 512, even if the drivers
can seemingly request a different size. This patch fixes mtd_blkdevs so
block sizes other than 512 work correctly.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index fa4362f..d60cc66 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -787,7 +787,6 @@
 
 	if (scan_header(part) == 0) {
 		part->mbd.size = part->sector_count;
-		part->mbd.blksize = SECTOR_SIZE;
 		part->mbd.tr = tr;
 		part->mbd.devnum = -1;
 		if (!(mtd->flags & MTD_WRITEABLE))
@@ -829,6 +828,8 @@
 	.name		= "rfd",
 	.major		= RFD_FTL_MAJOR,
 	.part_bits	= PART_BITS,
+	.blksize 	= SECTOR_SIZE,
+
 	.readsect	= rfd_ftl_readsect,
 	.writesect	= rfd_ftl_writesect,
 	.getgeo		= rfd_ftl_getgeo,