If CONFIG_PM is not set, init_iommu_pm_ops() introduced by commit 73dad772245546d2e79cf61546a9303b77a0bbcd (PCI / Intel IOMMU: Use
syscore_ops instead of sysdev class and sysdev) is not defined
appropriately. Fix this issue.
Reported-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>