mtd: rawnand: cafe: Use correct function name in comment block

The incorrect function name is being used in the comment for function
cafe_nand_read_page. Correct it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220805180117.2375503-1-colin.i.king@gmail.com