dt-bindings: arm: msm: Add sc8180x and sc8280xp LLCC compatibles

Add compatibles for the SC8180X and SC8280XP platforms to the existing
LLCC binding.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220502215406.612967-2-bjorn.andersson@linaro.org