The "struct nand_oobinfo" is able to record only 32 ECC code positions, which

[Stanley.Miao]

Now update nandwrite to use the new ioctl command ECCGETLAYOUT. In order to
keep compatible with the old linux kernel, a linux version detection function
is added.

YAFFS and JFFS2 has updated and we don't need the arguments "forcelegacy",
"forcejffs2", "forceyaffs" anymore. Now clean them up. 


Stanley.