[PATCH] mtd/gpmi : add BBT support

[Marek Vasut]

> > Actually it's not board specific. You can run various bootloaders or
> > various bootstrap tools on any of those boards. Though pdata seems ok
> > for the default case, maybe we should have a simple way to override
> > this?
> 
> You mean you want to switch to/drop the BBT if you want to? On MX23,
> this can be easily a very dangerous thing to do. What's the use case?

Tools that don't support writing the BBT properly.

> 
> Regards,
> 
>    Wolfram