ioremap and dma cleanups and fixes for superh (2nd resend)

[Christoph Hellwig]

Hi Yoshinori and Rich,

can you take a look and possibly pick up the series below that untangles
and sorts out minor issues with the sh ioremap and dma code?

I sent this out a few times, but never got an answer.  If you don't
want to pick up the series I can also take it through one of my trees
if I get ACKs.