arm64: dts: qcom: msm8996: Pad addresses

Pad all addresses in msm8996.dtsi to 8 digits, in order to make it
easier to ensure ordering when adding new nodes.

Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>