mtd: rawnand: Macronix: Add support for block protection

Macronix AC/AD series support using SET_FEATURES to change block
protection and unprotection. Block protection support can be checked
with GET_FEATURES.

Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1583220084-10890-3-git-send-email-masonccyang@mxic.com.tw