From: Paul Mundt <lethal@Linux-SH.ORG>

This updates the SuperH DMA driver, as well as cleaning up the registration
interface.

We also drop the use of bitfields in dma-sh since things like the SH4-202,
7751R, 7760, etc.  all have a completely different set of register
definitions.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>