mini2440: change mtd debug level

Signed-off-by: Fudong Bai <fudongbai@gmail.com>
mini2440: verify nand write

Signed-off-by: Fudong Bai <fudongbai@gmail.com>
s3c2440: nand: add original file

Signed-off-by: Fudong Bai <fudongbai@gmail.com>
s3c2440: nand: add hardware ecc support

Signed-off-by: Fudong Bai <fudongbai@gmail.com>
mini2440: using hardware ecc

Signed-off-by: Fudong Bai <fudongbai@gmail.com>