The a100u2w, ibmvscsi, mac53c94, mesh, and ps3rom drivers are built
under drivers/scsi so don't need to be specifically included.
The ps3rom driver then doesn't need to be excluded on ppc64el.
The ps3disk driver is a SATA driver not a SCSI driver, so add a
comment to explain why it's here.
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.