arm64: dts: qcom: sc7180: Add Last level cache controller node

Add device tree node for LLCC aka system cache controller for
SC7180 SoC.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/0101016ef3394291-2290a8be-91c9-4d46-b5ca-acd5277eb6e2-000000@us-west-2.amazonses.com


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>