[PATCH] Support PCIe Alternative RID Interpretation (ARI)

[Ryan Stone]

make universe turned up the fact that pcib_if.m is compiled into the
kernel even if device pci is removed from the kernel config.  This
means that pcib_if.m cannot reference default methods that I
implemented in the pci driver.  I have fixed this by moving the
default methods into a new .c file that will always be compiled into
the kernel.  These patches have been updated:

http://people.freebsd.org/~rstone/patches/ari/0001-Add-a-method-to-get-the-PCI-RID-for-a-device.patch
http://people.freebsd.org/~rstone/patches/ari/0004-Add-support-for-PCIe-ARI.patch


Also, I made a minor change to the DMAR patch to correct a style(9)
issue that crept in (a line went over 80 characters in intel_ctx.c).