CVE-2025-37829 cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()

In the Linux kernel, the following vulnerability has been resolved: cpufreq: scpi: Fix null-ptr-deref in scpicpufreqgetrate cpufreqcpugetraw can return NULL when the target CPU is not present in the policy-cpus mask. scpicpufreqgetrate does not check for this case, which results in a NULL pointer...