dt-bindings: nvmem: Fix node descriptions in uniphier-efuse example

Prior to adding dt-bindings for SoC-dependent controllers, rename the
parent node to the generic name in the example.

And drop a parent node of the nvmem as it is not directly necessary here.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221213082449.2721-9-hayashi.kunihiko@socionext.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml

@@ -31,14 +31,6 @@ unevaluatedProperties: false
 
 examples:
   - |
-    // The UniPhier eFuse should be a subnode of a "soc-glue" node.
-
-    soc-glue@5f900000 {
-        compatible = "simple-mfd";
-        #address-cells = <1>;
-        #size-cells = <1>;
-        ranges = <0x0 0x5f900000 0x2000>;
-
     efuse@100 {
         compatible = "socionext,uniphier-efuse";
         reg = <0x100 0x28>;
@@ -92,4 +84,3 @@ examples:
             bits = <0 4>;
         };
     };
-    };