Correct the provenance of finger.1 and show the link that it was part of
2BSD (from Marcin F. Michalski)
Fix a bug that ichlpcib(4) maps I/O area incorrectly and then fails to attach
gpio. It might also fix ACPI related problem described in PR#48960:
 - The LPCIB_PCI_PMBASE and LPCIB_PCI_GPIO register are alike PCI BAR but not
   completely compatible with it. It's ok because the registers' addresses are
   out of BAR0-BAR5(0x10-0x24) and are located in the device-dependent header.
   The PMBASE and GPIO registers define the base address and the type but not
   describe the size. The size is fixed to 128bytes. So use
   pci_mapreg_submap().
 - Make pci_mapreg_submap() extern again.
 - Fix the calculation of the map size in pci_mapreg_submap().