Added MSI/MSI-X and interrupt_distribute(9) support for powerpc.

branches: 1.10.30; 1.10.34;
#include <sys/bus.h> instead of <machine/bus.h>.

Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Add support pci_intr_setattr.
Export non-inline version of pci api for modules (_MODULE is defined).
Fix definition of pc_conf_hook and pc_conf_interrupt.
Switch to using inlines instead of macros.
Switch ibm4xx to use <powerpc/pci_machdep.h>

Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.6.42;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.5.30; 1.5.38; 1.5.48; 1.5.50; 1.5.52; 1.5.54;
merge ktrace-lwp.

branches: 1.4.16;
__KERNEL_RCSID()

branches: 1.3.2;
Switch/adapt to new bus space infrastructure.

remove trailing \n in panic(). approved perry.

branches: 1.1.2; 1.1.14;
New port: NetBSD/mvmeppc

Based mostly on NetBSD/prep at this time since the earlier mvme160x
boards are pretty much PReP compliant. Later boards in the range
diverge somewhat from the reference platform, hence the separate port.

Still needs *lots* of bashing into shape, but at this time it will
boot to multi-user over ethernet on an MVME1603-051.