arm64: dts: qcom: SM8750: Enable CPUFreq support

arm64: dts: qcom: SM8750: Enable CPUFreq support

Add the cpucp mailbox, sram and SCMI nodes required to enable
the CPUFreq support using the SCMI perf protocol on SM8750 SoCs.

Signed-off-by: Jagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Sibi Sankar <sibi.sankar@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251211-sm8750-cpufreq-v1-2-394609e8d624@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>