[mtd-util][nandwrite] does nandwrite support MLC flash?

[zheng shi]

Hi,
It seems that nandwrite doesn't support writing image with oob area
into MLC flash.
In current design, nandwrite.c use ioctl(.., MEMWRITEOOB, ...) and
pwrite separately to write image with oob area.
But partial-write is forbidden for MLC flash.

I suggest maybe new mtd ioctl command be proposed to make
mtd->write_oob visible for user space tools like nandwrite.

-- 
Regards, neversetsun