dt-bindings: dma: Add dma-channel-mask to nvidia,tegra210-adma

Add dma-channel-mask binding doc support to nvidia,tegra210-adma
to reserve the adma channel usage
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Link: https://lore.kernel.org/r/20231128071615.31447-2-mkumard@nvidia.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml

@@ -53,6 +53,9 @@ properties:
       ADMA_CHn_CTRL register.
     const: 1
 
+  dma-channel-mask:
+    maxItems: 1
+
 required:
   - compatible
   - reg