mtd: rawnand: NAND controller write protect

Allow NAND controller to be responsible for write protect pin
handling during fast path and exec_op destructive operation
when controller_wp flag is set.

Signed-off-by: David Regan <dregan@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231125012438.15191-2-dregan@broadcom.com