YAFFS

This patch adds YAFFS support to U-Boot.

This is based on source from YAFFS CVS server as per November 13. 2007.

I have removed files/interfaces that are irrelevant for U-Boot and put all files in one directory. The makefile is rewritten to fit U-Boot.
I have also added a cmd_yaffs2.c file in common/

The patch is far to big to fit the size limit on the mailing list so I have put the patch on our git http server:
http://git.tandberg.com/tandberg/patches/yaffs.patch

The patch can also be found on our git server:
http://git.tandberg.com/tandberg/u-boot.git in branches yaffs2*

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I have only tested/used this patch together with our MTD/NAND layer patch which can be found on this mailing list and on our git http server:
http://git.tandberg.com/tandberg/patches/mtd-update.patch
and our git server:
http://git.tandberg.com/tandberg/u-boot.git
in branches mtd-update*

Best regards
William

And merry Christmas to all U-Boot developers and users