[PATCH] dt-bindings: net: renesas,ether: Add iommus property

[Geert Uytterhoeven <geert+renesas@xxxxxxxxx>]

make dtbs_check:

    arch/arm64/boot/dts/renesas/r8a77980-condor.dtb: ethernet@e7400000: 'iommus' does not match any of the regexes: '@[0-9a-f]$', 'pinctrl-[0-9]+'
	    from schema $id: http://devicetree.org/schemas/net/renesas,ether.yaml#

Ethernet Controllers on R-Car Gen2/Gen3 SoCs can make use of the IOMMU,
so add the missing iommus property.

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
 Documentation/devicetree/bindings/net/renesas,ether.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/renesas,ether.yaml b/Documentation/devicetree/bindings/net/renesas,ether.yaml
index 29355ab98569daf6..d6c5983499b87d64 100644
--- a/Documentation/devicetree/bindings/net/renesas,ether.yaml
+++ b/Documentation/devicetree/bindings/net/renesas,ether.yaml
@@ -59,6 +59,9 @@ properties:
   clocks:
     maxItems: 1
 
+  iommus:
+    maxItems: 1
+
   power-domains:
     maxItems: 1
 
-- 
2.34.1