linux-imx

dmaengine: edma: Refactor the dma device and channel struct initialization

Move all code under one function to do the dma device and eDMA channel
related setup so they are not scattered around the driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>