mtd: rawnand: plat_nand: Pass a nand_chip object to all platform_nand_ctrl hooks

Let's make the raw NAND API consistent by patching all helpers and
hooks to take a nand_chip object instead of an mtd_info one or
remove the mtd_info object when both are passed.

In order to do that, we first need to update the platform_nand_ctrl
hooks to take a nand_chip object instead of an mtd_info.

We add temporary plat_nand_xxx() wrappers to the do the mtd -> chip
conversion, but those will be dropped when patching nand_chip hooks to
take a nand_chip object.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c
index 354d258..9173949 100644
--- a/arch/mips/rb532/devices.c
+++ b/arch/mips/rb532/devices.c
@@ -141,14 +141,13 @@ static struct platform_device cf_slot0 = {
 };
 
 /* Resources and device for NAND */
-static int rb532_dev_ready(struct mtd_info *mtd)
+static int rb532_dev_ready(struct nand_chip *chip)
 {
 	return gpio_get_value(GPIO_RDY);
 }
 
-static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+static void rb532_cmd_ctrl(struct nand_chip *chip, int cmd, unsigned int ctrl)
 {
-	struct nand_chip *chip = mtd_to_nand(mtd);
 	unsigned char orbits, nandbits;
 
 	if (ctrl & NAND_CTRL_CHANGE) {