arm64: dts: qcom: sc7280: Add cpu and llcc BWMON

Add cpu and llcc BWMON nodes and their corresponding
OPP tables for sc7280 SoC.

Signed-off-by: Rajendra Nayak <quic_rjendra@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220902043511.17130-5-quic_rjendra@quicinc.com