arm64: dts: qcom: use decimal for cache level

Cache level is by convention a decimal number, not hex.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230416101134.95686-2-krzysztof.kozlowski@linaro.org