The module lists for powerpc/powerpc64 are mostly the same as for
powerpc. Some of them are duplicates while some use #include.
Change the duplicates to use #include.
Merge the configuration and default-configuration directories,
using per-architecture overrides in package-list.
This requires a newer version of kernel-wedge to support
Depends_<arch> properly.
The only immediate change to debian/control is to remove the
different description for nic-modules on sparc64.