Pull up following revision(s) (requested by tron in ticket #170):
sys/dev/pci/ahcisata_pci.c: revision 1.13
Force the nVidia nForce 630i MCP73 to attach to ahcisata(4) as well.
It would otherwise attach to pciide(4) and use PIO mode.
Patch submitted by Bernhard Moellemann in PR kern/40134.

(snj)