power: Spring cleanup

* Cleanup SoC specific files:
 - Fix code spacing and indentation
 - Remove dead code
 - Remove useless comments
 - Remove useless logs
 - Make code uniform between the files so it's easier to diff
 - Use declared enums when possible for power hints

Change-Id: Ie1378c94c53b33299927c5eb1bfc19f1a42b8743
14 files changed