[PATCH 3/4] ARM: create a common IOMEM definition

On Sunday 11 March 2012, Rob Herring wrote:

From: Rob Herring <redacted>

Several platforms create IOMEM defines for casting to 'void __iomem *',
and other platforms are incorrectly using __io() macro for the same
purpose. This creates a common definition and removes all the platform
specific versions. Rather than try to make linux/io.h and asm/io.h
assembly safe, the assembly version of IOMEM is moved into
asm/assembler.h.

Looks good to me, in order to fix the problem at hand. I'm not sure
about spreading the IOMEM() macro further, that is largely a separate
problem and only a question of style, not of correctness as with __io().

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