mtd: atmel_nand: fix typo in dev_err error message
mtd: atmel_nand: fix typo in dev_err error message

Fix typo, "Unkown" -> "Unknown"

Signed-off-by: Colin Ian King <d100aa70785e45ee8deab668147d941941915c21@canonical.com>
Acked-by: Josh Wu <5d315a13f7549d1ecf8e62305448b567ef831df9@atmel.com>
Signed-off-by: Brian Norris <ac73eed4b8a8c9127255a2696c52b2e7503720b8@gmail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs