staging: mt29f_spinand: 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 <[e-mail]>
Acked-by: Greg Kroah-Hartman <[e-mail]>
Signed-off-by: Boris Brezillon <[e-mail]>

drivers/staging/mt29f_spinand/mt29f_spinand.c

···
 	chip->ecc.write_page = spinand_write_page_hwecc;
 #else
 	chip->ecc.mode	= NAND_ECC_SOFT;
+	chip->ecc.algo	= NAND_ECC_HAMMING;
 	if (spinand_disable_ecc(spi_nand) < 0)
 		dev_info(&spi_nand->dev, "%s: disable ecc failed!\n",
 			 __func__);