dt-bindings: nvmem: convert base example to use NVMEM fixed cells layout

With support for the "fixed-layout" binding it's possible and preferred
now to define fixed NVMEM cells in the layout node. Do that for the
example binding.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Message-ID: <20230611140330.154222-25-srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/nvmem/nvmem.yaml

@@ -68,6 +68,11 @@ examples:
 
           /* ... */
 
+          nvmem-layout {
+              compatible = "fixed-layout";
+              #address-cells = <1>;
+              #size-cells = <1>;
+
               /* Data cells */
               tsens_calibration: calib@404 {
                   reg = <0x404 0x10>;
@@ -88,5 +93,6 @@ examples:
                   bits = <2 3>;
               };
           };
+      };
 
 ...