dt-bindings: mfd: ti,am3359-tscadc: Allow dmas property to be optional

ADC module can function without DMA, so there may not be dma channel
always associated with device. Hence, remove "dmas", "dma-names" from list
of required properties.

Signed-off-by: Santhosh Kumar K <[email protected]>
Reviewed-by: Miquel Raynal <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: Santhosh Kumar K

Documentation/devicetree/bindings/mfd/ti,am3359-tscadc.yaml

@@ -61,8 +61,6 @@ required:
   - interrupts
   - clocks
   - clock-names
-  - dmas
-  - dma-names
 
 additionalProperties: false