tty: nozomi: fix spelling mistake in macro NOZOMI_STATE_UKNOWN

Rename NOZOMI_STATE_UKNOWN to NOZOMI_STATE_UNKNOWN (add missing N)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>