[PATCH] mtd: lpddr: fix Kconfig dependency, for I/O accessors

[Brian Norris]

On Wed, May 21, 2014 at 01:29:13PM -0700, Brian Norris wrote:
> Not all architectures implement a writel_relaxed() accessor. Hopefully
> this will change eventually, but for now, this means lpddr2_nvm.c can't
> compile on some architectures.
> 
> Let's add an ARM dependency for now, and leave a comment so maybe we can
> change this in the future.
> 
> Signed-off-by: Brian Norris <computersforpeace at gmail.com>
> Cc: Vincenzo Aliberti <vincenzo.aliberti at gmail.com>

Pushed to l2-mtd.git, to stop people from reporting build failures on
x86.

Brian