dt-bindings: dmaengine: mmp: deprecate '#dma-channels' and '#dma-requests'

The generic properties, used in most of the drivers and defined in
generic dma-common DT bindings, are 'dma-channels' and 'dma-requests'.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

Documentation/devicetree/bindings/dma/mmp-dma.txt

···
 		or one irq for pdma device
 
 Optional properties:
-- #dma-channels: Number of DMA channels supported by the controller (defaults
+- dma-channels: Number of DMA channels supported by the controller (defaults
   to 32 when not specified)
-- #dma-requests: Number of DMA requestor lines supported by the controller
+- #dma-channels: deprecated
+- dma-requests: Number of DMA requestor lines supported by the controller
   (defaults to 32 when not specified)
+- #dma-requests: deprecated
 
 "marvell,pdma-1.0"
 Used platforms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688.
···
 	      reg = <0xd4000000 0x10000>;
 	      interrupts = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15>;
 	      interrupt-parent = <&intcmux32>;
-	      #dma-channels = <16>;
+	      dma-channels = <16>;
       };
 
 /*
···
 	      compatible = "marvell,pdma-1.0";
 	      reg = <0xd4000000 0x10000>;
 	      interrupts = <47>;
-	      #dma-channels = <16>;
+	      dma-channels = <16>;
       };