mtd: nand: fsmc: validate ECC setup by checking algorithm directly

NAND core sets ECC algorithm in algo field now and it should be
preferred over the mode field. This also prepares driver for dropping
NAND_ECC_SOFT_BCH.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/fsmc_nand.c

@@ -958,9 +958,12 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
 			nand->ecc.strength = 1;
 			break;
 
+		case NAND_ECC_SOFT:
 		case NAND_ECC_SOFT_BCH:
+			if (nand->ecc.algo == NAND_ECC_BCH) {
 				dev_info(&pdev->dev, "Using 4-bit SW BCH ECC scheme\n");
 				break;
+			}
 
 		default:
 			dev_err(&pdev->dev, "Unsupported ECC mode!\n");