mtd: fix CONFIG_MTD_COMPLEX_MAPPINGS=n compile

[Artem Bityutskiy]

On Sun, 2010-12-19 at 14:07 -0500, Jason Lunz wrote:
> You should also drop the changes that
> 7bc3265a9e9a09d6a9a3cfaaf53ccf3af5271a93 made to drivers/mtd/mtdchar.c -
> there's no point changing that when mtdchar is disabled on ARCH=um.

Ok, could you please re-sent the final patch with the commit message
etc?

-- 
Best Regards,
Artem Bityutskiy (Битюцкий Артём)