arm64: dts: qcom: sc7180: Add SoC-specific compatible to cpufreq_hw

Add a SoC-specific compatbile to cpufreq_hw for compliancy with bindings.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230308-topic-cpufreq_bindings-v1-4-3368473ec52d@linaro.org

arch/arm64/boot/dts/qcom/sc7180.dtsi

@@ -3576,7 +3576,7 @@ osm_l3: interconnect@18321000 {
 		};
 
 		cpufreq_hw: cpufreq@18323000 {
-			compatible = "qcom,cpufreq-hw";
+			compatible = "qcom,sc7180-cpufreq-hw", "qcom,cpufreq-hw";
 			reg = <0 0x18323000 0 0x1400>, <0 0x18325800 0 0x1400>;
 			reg-names = "freq-domain0", "freq-domain1";