spi: dt-bindings: samsung: make dma properties not required

Since the addition of the driver in 2009, the driver selects between DMA
and polling mode depending on the transfer length - DMA mode for
transfers bigger than the FIFO depth, polling mode otherwise. All
versions of the IP support polling mode, make the dma properties not
required.

Signed-off-by: Tudor Ambarus <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: ambarus

Documentation/devicetree/bindings/spi/samsung,spi.yaml

@@ -76,8 +76,6 @@ required:
   - compatible
   - clocks
   - clock-names
-  - dmas
-  - dma-names
   - interrupts
   - reg