[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/autcpu12.c b/drivers/mtd/nand/autcpu12.c
index 43b2960..dbb1b626 100644
--- a/drivers/mtd/nand/autcpu12.c
+++ b/drivers/mtd/nand/autcpu12.c
@@ -163,7 +163,7 @@
 	this->dev_ready = autcpu12_device_ready;
 	/* 20 us command delay time */
 	this->chip_delay = 20;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	/* Enable the following for a flash based bad block table */
 	/*