John Baldwin 9415d1e0ac Add pci_save_state() and pci_restore_state() wrappers around
pci_cfg_save() and pci_cfg_restore() for device drivers to use when
saving and restoring state (e.g. to handle device-specific resets).

Reviewed by:	imp
MFC after:	2 weeks
2012-03-01 20:20:55 +00:00
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