These macros are used only locally, so move them to the .c file.

No functional change.

v2:
- add init power domain to always-on power wells in the following
  - separate - patch (Paulo)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>