pm: cpupower: Add header changes for cpufreq.h to SWIG bindings

"cpupower: Add support for showing energy performance preference" added
two new functions to cpufreq.h. This patch adds them to the bindings.

Link: https://lore.kernel.org/linux-pm/8dc731c3-6586-4265-ae6a-d93ed219a963@linuxfoundation.org/T/#t

Tested by compiling both libcpupower and the headers; running the test
script that does not use the functions as a basic sanity test.

Link: https://lore.kernel.org/r/20241224062329.39606-1-jwyatt@redhat.com


Signed-off-by: "John B. Wyatt IV" <jwyatt@redhat.com>
Signed-off-by: "John B. Wyatt IV" <sageofredondo@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>