[M68KNOMMU 00/06]: move common ColdFire code to its own directory

Move common ColdFire CPU code into its own platform directory. Currently the common ColdFire CPU family code sits in the arch/m68knommu/platform/5307 directory. This is confusing, the files containing this common code are in no way specific to the 5307 ColdFire. Create an

[M68KNOMMU 00/06]: move common ColdFire code to its own directory

Move common ColdFire CPU code into its own platform directory. Currently the common ColdFire CPU family code sits in the arch/m68knommu/platform/5307 directory. This is confusing, the files containing this common code are in no way specific to the 5307 ColdFire. Create an