mtd: nand: cmx270: set ECC algorithm explicitly

This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to
enum nand_ecc_algo).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/cmx270_nand.c

@@ -187,6 +187,7 @@ static int __init cmx270_init(void)
 	/* 15 us command delay time */
 	this->chip_delay = 20;
 	this->ecc.mode = NAND_ECC_SOFT;
+	this->ecc.algo = NAND_ECC_HAMMING;
 
 	/* read/write functions */
 	this->read_byte = cmx270_read_byte;