[PATCH] Centralise CONFIG_ARCH_NO_VIRT_TO_BUS

[David Miller]

From: Stephen Rothwell <sfr at canb.auug.org.au>
Date: Tue, 13 Nov 2012 08:26:15 +1100

> 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>

Acked-by: David S. Miller <davem at davemloft.net>