D8153: Try to read CPU clock from cpufreq/scaling_cur_freq instead of /proc/cpuinfo

[Sebastian Kügler]

sebas accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R106 KSysguard

BRANCH
  Plasma/5.8

REVISION DETAIL
  https://phabricator.kde.org/D8153

To: fvogt, #plasma, sebas
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart