mtd: nand_bch: fix spelling of "probably"

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/nand_bch.c

@@ -175,7 +175,7 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd)
 	 * which is called by mtd_ooblayout_count_eccbytes().
 	 * Make sure they are properly initialized before calling
 	 * mtd_ooblayout_count_eccbytes().
-	 * FIXME: we should probaly rework the sequencing in nand_scan_tail()
+	 * FIXME: we should probably rework the sequencing in nand_scan_tail()
 	 * to avoid setting those fields twice.
 	 */
 	nand->ecc.steps = eccsteps;