dt-bindings: nvmem: mxs-ocotp: Document fsl,ocotp

commit a2a8aef upstream.

Both imx23.dtsi and imx28.dtsi describe the OCOTP nodes in
the format:

compatible = "fsl,imx28-ocotp", "fsl,ocotp";

Document the "fsl,ocotp" entry to fix the following schema
warning:

efuse@8002c000: compatible: ['fsl,imx23-ocotp', 'fsl,ocotp'] is too long
from schema $id: http://devicetree.org/schemas/nvmem/mxs-ocotp.yaml#

Fixes: 2c50446 ("dt-bindings: nvmem: Convert MXS OCOTP to json-schema")
Cc:  <[email protected]>
Signed-off-by: Fabio Estevam <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Signed-off-by: Srinivas Kandagatla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml

@@ -14,9 +14,11 @@ allOf:
 
 properties:
  compatible:
- enum:
- - fsl,imx23-ocotp
- - fsl,imx28-ocotp
+ items:
+ - enum:
+ - fsl,imx23-ocotp
+ - fsl,imx28-ocotp
+ - const: fsl,ocotp
 
  "#address-cells":
  const: 1
@@ -40,7 +42,7 @@ additionalProperties: false
 examples:
  - |
  ocotp: efuse@8002c000 {
- compatible = "fsl,imx28-ocotp";
+ compatible = "fsl,imx28-ocotp", "fsl,ocotp";
  #address-cells = <1>;
  #size-cells = <1>;
  reg = <0x8002c000 0x2000>;