arm64: dts: qcom: sdm670: add specific cpufreq compatible

The bindings for the CPU frequency scaling driver require a specific
compatible for the SoC. Add the compatible.

Fixes: 0c665213 ("arm64: dts: qcom: sdm670: add cpu frequency scaling")
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230816230412.76862-9-mailingradian@gmail.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sdm670.dtsi

@@ -1532,7 +1532,7 @@ osm_l3: interconnect@17d41000 {
 		};
 
 		cpufreq_hw: cpufreq@17d43000 {
-			compatible = "qcom,cpufreq-hw";
+			compatible = "qcom,sdm670-cpufreq-hw", "qcom,cpufreq-hw";
 			reg = <0 0x17d43000 0 0x1400>, <0 0x17d45800 0 0x1400>;
 			reg-names = "freq-domain0", "freq-domain1";