dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing compatibles

Document the cpufreq-epss compatibles currently used in the tree, plus
the sc7280 which will be added in a separate commit.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml

@@ -26,8 +26,12 @@ properties:
         items:
           - enum:
               - qcom,qdu1000-cpufreq-epss
+              - qcom,sc7280-cpufreq-epss
+              - qcom,sc8280xp-cpufreq-epss
               - qcom,sm6375-cpufreq-epss
               - qcom,sm8250-cpufreq-epss
+              - qcom,sm8350-cpufreq-epss
+              - qcom,sm8450-cpufreq-epss
           - const: qcom,cpufreq-epss
 
   reg: