[PATCH 00/12] m68knommu: generalize the ColdFire clock support for all CPU types

The current Coldfire clock code only really supports those ColdFire CPU types
that have the more advanced enable/disable clock hardware support. If we
generalize our clock code we can support all types, even those with simpler
fixed clock trees.

This results in much cleaner and consistent clock support. And it means that
we can in the future use the clock API in our timers and throughout the other
ColdFire p[eripheraps, instead of hard coded clock definitions.