Switch over pxamci to dmaengine. This prepares the devicetree full
support of pxamci.
This was successfully tested on a PXA3xx board, as well as PXA27x.
Signed-off-by: Daniel Mack <zonque@gmail.com>
[adapted to pxa-dma] Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>