x86_energy_perf_policy: Rewrite Linux/Android MSR path discovery

First check that the Linux MSR driver path exists, modprobe if no.
If still no, then check that the Android MSR driver path exists.

Read or Write permissions are handled at run-time
in the get_msr()/put_msr() error paths.

Create set_msr_path() helper.

Return -1 for all fatal errors.

Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Assisted-by: GitHub-Copilot:Claude-Sonnet-4.6
Signed-off-by: Len Brown <len.brown@intel.com>

0 files changed, 0 insertions, 0 deletions