Fix typos in drivers/pci.  Comment and whitespace changes only.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: NRandy Dunlap <rdunlap@infradead.org>