iSeries (AS/400).

There are no changes outside of include/asm-ppc64 and arch/ppc64
in this changeset.

  - Alan Cox: more merging
  - L.C. Chang: new SiS IDE PCI id's.
  - Maciej Rozycki: make MP table parsing more anal. Should fix broken P4 MP tables.
  - Leonard Zubkoff: merge DAC960 completion changes
  - Christoph Rohland: saner tmpfs mount-time limit behaviour (and remount)
  - me: buffer.c logic update - faster and hopefully livelock-free