Merge tag 'pxa-for-4.19-dma_slave_map' of https://github.com/rjarzmik/linux

Pull in branch for switching pxa to DMA slave maps, from Robert Jarzmik.
This is needed due to dependencies of changes for the pxamci mmc driver.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>