m68knommu: Allow ColdFire CPUs to use unaligned accesses
All of the current Linux supported ColdFire CPUs handle unaligned
memory accesses. So remove the CONFIG_CPU_HAS_NO_UNALIGNED option
selection for ColdFire. If we ever support a specific ColdFire CPU
that does not support unaligned accesses then we can insert the
CONFIG_CPU_HAS_NO_UNALIGNED for that specific CPU type.