TODO 357 B

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