mtd: nand: mxs_nand: report correct ECC parameters

Report correct ECC parameters back to the stack. Do not report
bytes as we have it not immeaditly available and the Linux version
also does not report it. It seems to have no aversive effect.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

drivers/mtd/nand/mxs_nand.c

@@ -1253,9 +1253,8 @@ void board_nand_init(void)
 
 	nand->ecc.layout	= &fake_ecc_layout;
 	nand->ecc.mode		= NAND_ECC_HW;
-	nand->ecc.bytes		= 9;
-	nand->ecc.size		= 512;
-	nand->ecc.strength	= 8;
+	nand->ecc.size		= nand_info->bch_geometry.ecc_chunk_size;
+	nand->ecc.strength	= nand_info->bch_geometry.ecc_strength;
 
 	/* second phase scan */
 	err = nand_scan_tail(mtd);