This patch adds configurable registers (using __iomem addresses)
to allow the use of fsl-edma-common code with slightly different
edma module versions, as Vybrid (v1) and ColdFire (v2) are.
Signed-off-by: NAngelo Dureghello <angelo@sysam.it>
Tested-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NVinod Koul <vkoul@kernel.org>