dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM4450 compatibles

Add compatible for EPSS CPUFREQ-HW on SM4450.

Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>
Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>