Add support for W25N04KV.

W25N04KV has 8-bit on-die ECC.
Signed-off-by: Zhi-Jun You <hujy652@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240107144120.532-1-hujy652@gmail.com