[PATCH] dt-bindings: mtd: mxc-nand: Document fsl,imx31-nand

[Fabio Estevam]

From: Fabio Estevam <festevam at denx.de>

imx31.dtsi uses the following NAND compatible:
    
compatible = "fsl,imx31-nand", "fsl,imx27-nand";
    
Document 'fsl,imx31-nand' to fix the following dt-schema warning:
    
compatible: ['fsl,imx31-nand', 'fsl,imx27-nand'] is too long

Signed-off-by: Fabio Estevam <festevam at denx.de>
---
 Documentation/devicetree/bindings/mtd/mxc-nand.yaml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mtd/mxc-nand.yaml b/Documentation/devicetree/bindings/mtd/mxc-nand.yaml
index cf4198e43d7f..bd8f7b683953 100644
--- a/Documentation/devicetree/bindings/mtd/mxc-nand.yaml
+++ b/Documentation/devicetree/bindings/mtd/mxc-nand.yaml
@@ -14,8 +14,12 @@ allOf:
 
 properties:
   compatible:
-    const: fsl,imx27-nand
-
+    oneOf:
+      - const: fsl,imx27-nand
+      - items:
+          - enum:
+              - fsl,imx31-nand
+          - const: fsl,imx27-nand
   reg:
     maxItems: 1
 
-- 
2.34.1