dt-bindings: mfd: Drop unrelated nodes from DTS example

Binding example should not contain other nodes, e.g. consumers of
resource providers, because this is completely redundant and adds
unnecessary bloat.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250501145125.59952-3-krzysztof.kozlowski@linaro.org


Signed-off-by: Lee Jones <lee@kernel.org>