Pull powerpc fix from Ben Herrenschmidt:
 "Here's one regression fix for 3.13 that I would appreciate if you
  could still pull in.  It was an "interesting" one to debug, basically
  it's an old bug that got somewhat "exposed" by new code breaking the
  boot on PA Semi boards (yes, it does appear that some people are still
  using these!)"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Check return value of instance-to-package OF call