mtd: nand: convert to nand_set_flash_node()

Used semantic patch with 'make coccicheck MODE=patch COCCI=script.cocci':

---8<----
virtual patch

@@
struct nand_chip *c;
struct device_node *d;
@@
-(c)->flash_node = (d)
+nand_set_flash_node(c, d)
---8<----

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
index 12c6190..7bd4102 100644
--- a/drivers/mtd/nand/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/brcmnand/brcmnand.c
@@ -1925,7 +1925,7 @@
 	mtd = &host->mtd;
 	chip = &host->chip;
 
-	chip->flash_node = dn;
+	nand_set_flash_node(chip, dn);
 	chip->priv = host;
 	mtd->priv = chip;
 	mtd->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "brcmnand.%d",
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 07af3dc..6f9e422 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -1033,7 +1033,7 @@
 	nand->options = pdata->options;
 	nand->select_chip = fsmc_select_chip;
 	nand->badblockbits = 7;
-	nand->flash_node = np;
+	nand_set_flash_node(nand, np);
 
 	if (pdata->width == FSMC_NAND_BW16)
 		nand->options |= NAND_BUSWIDTH_16;
diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
index 8247118..0775ae4c 100644
--- a/drivers/mtd/nand/sunxi_nand.c
+++ b/drivers/mtd/nand/sunxi_nand.c
@@ -1330,7 +1330,7 @@
 	 * in the DT.
 	 */
 	nand->ecc.mode = NAND_ECC_HW;
-	nand->flash_node = np;
+	nand_set_flash_node(nand, np);
 	nand->select_chip = sunxi_nfc_select_chip;
 	nand->cmd_ctrl = sunxi_nfc_cmd_ctrl;
 	nand->read_buf = sunxi_nfc_read_buf;
diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c
index 8805d63..7b952ab 100644
--- a/drivers/mtd/nand/vf610_nfc.c
+++ b/drivers/mtd/nand/vf610_nfc.c
@@ -714,7 +714,7 @@
 				goto error;
 			}
 
-			chip->flash_node = child;
+			nand_set_flash_node(chip, child);
 		}
 	}