linux-phytec-ti

mtd: nand: correct documentation for NAND_ECC_HW8_512

The documentation for this parameter said "6 bytes" when "8 bytes" was
intended; correct it.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>