- client.txt was moved by f36d2e67 (dmaengine: Move the current doc to a
  folder of its own)
- dmatmest.txt was moved by 935cdb56 (dmanegine: move dmatest.txt to
  dmaengine folder)
- provider.txt was added by c4d2ae967 (Documentation: dmaengine: Add a
  documentation for the dma controller API).
Cc: Maxime Ripard 
Cc: Vinod Koul 
Cc: Jonathan Corbet 
Cc: dmaengine@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Signed-off-by: Henrik Austad 
Signed-off-by: Jonathan Corbet