[PATCH] Centralise CONFIG_ARCH_NO_VIRT_TO_BUS

[Arnd Bergmann]

On Monday 12 November 2012, Stephen Rothwell wrote:
>   Show Details
>   Make if easier for more architectures to select it and thus disable
> drivers that use virt_to_bus().
> 
> Signed-off-by: Stephen Rothwell <sfr at canb.auug.org.au>

Very nice, I was recently looking into enabling this for ARM
as well, at least for the platforms that are known to not
need virt_to_bus.

Acked-by: Arnd Bergmann <arnd at arndb.de>