mtd: nand: add sunxi NAND flash controller support

Add support for the sunxi NAND Flash Controller (NFC).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Brian: tweaked to fix ecc->steps issue]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
3 files changed