dt-bindings: nvmem: qcom,spmi-sdam: fix example 'reg' property

The SPMI PMIC register region width is fixed and should not be encoded
in the devicetree.

Amend the example with a parent pmic node with the expected
'#address-cells' and '#size-cells' and fix up the 'reg' property.

Fixes: 9664a6b5 ("dt-bindings: nvmem: add binding for QTI SPMI SDAM")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230404172148.82422-3-srinivas.kandagatla@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>