arm64: dts: qcom: sdm845: correct slimbus children unit addresses

slimbus uses address-cells=2, so correct children unit addresses.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220928152027.489543-4-krzysztof.kozlowski@linaro.org