PCI: never discard enable/suspend/resume_early/resume fixups

The enable/suspend/resume_early/resume fixups can be called at any time, so
they can't be __init or __devinit.

[bhelgaas: changelog]
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>