dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function.
This function is only used once in the driver and has a lot of checks that are not needed anymore. For this reason it's been merged with 'imxdma_enable_hw'. Signed-off-by: NJavier Martin <javier.martin@vista-silicon.com> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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