[PATCH] dt-bindings: net: nxp,sja1105: document spi-cpol

[Krzysztof Kozlowski]

Some boards use SJA1105 Ethernet Switch with SPI CPOL, so document this
to fix dtbs_check warnings:

  arch/arm64/boot/dts/freescale/fsl-lx2160a-bluebox3.dtb: ethernet-switch@0: Unevaluated properties are not allowed ('spi-cpol' was unexpected)

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
index 1e26d876d146..a73905a50ee5 100644
--- a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
@@ -36,6 +36,8 @@ properties:
   reg:
     maxItems: 1
 
+  spi-cpol: true
+
   # Optional container node for the 2 internal MDIO buses of the SJA1110
   # (one for the internal 100base-T1 PHYs and the other for the single
   # 100base-TX PHY). The "reg" property does not have physical significance.
-- 
2.34.1