Expose the sysfs interface to userspace tools for power monitoring.
Useful for tracking energy usage in CPU package, cores, DRAM, etc.
Build system: x86/64
Build-tested: x86/64
Run-tested: x86/64
Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/18255
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>