arm64: dts: qcom: sc8180x: Fix OSM L3 compatible

arm64: dts: qcom: sc8180x: Fix OSM L3 compatible

Since commit c70edc067739 ("dt-bindings: interconnect: Add sm8350,
sc8280xp and generic OSM L3 compatibles") OSM L3 compatible should have
generic fallback:

  sc8180x-primus.dtb: interconnect@18321000: compatible: 'oneOf' conditional failed, one must be fixed:

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230617204118.61959-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>