[MTD] NAND modularize ECC

First step of modularizing ECC support.
- Move ECC related functionality into a seperate embedded data structure
- Get rid of the hardware dependend constants to simplify new ECC models

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/mtd/nand/toto.c b/drivers/mtd/nand/toto.c
index c51c895..50aa6a4 100644
--- a/drivers/mtd/nand/toto.c
+++ b/drivers/mtd/nand/toto.c
@@ -146,7 +146,7 @@
 	this->dev_ready = NULL;
 	/* 25 us command delay time */
 	this->chip_delay = 30;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	/* Scan to find existance of the device */
 	if (nand_scan(toto_mtd, 1)) {