dt-bindings: cpufreq: cpufreq-qcom-hw: Add SDX75 compatible

Add compatible for EPSS CPUFREQ-HW on SDX75.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>