1TODO for slave dma
2
31. Move remaining drivers to use new slave interface
42. Remove old slave pointer machansim
53. Make issue_pending to start the transaction in below drivers
6	- mpc512x_dma
7	- imx-dma
8	- imx-sdma
9	- mxs-dma.c
10	- intel_mid_dma
114. Check other subsystems for dma drivers and merge/move to dmaengine
125. Remove dma_slave_config's dma direction.
13