kernel/acpi: Sync acpi_pci_link with FreeBSD.

kernel/acpi: Sync acpi_pci_link with FreeBSD.

* Fix use-after-free bug for extended IRQ resource[1].

* Some BIOSes use an Extended IRQ resource descriptor in _PRS for a link
  that uses non-ISA IRQs but use a plain IRQ resource in _CRS.  However,
  a non-ISA IRQ can't fit into a plain IRQ resource.  If we encounter a
  link like this, build the resource buffer from _PRS instead of _CRS.

* Set the correct size of the end tag in a resource buffer.

* Make MALLOC_DEFINEs that have no corresponding MALLOC_DECLAREs static.

Reviewed-and-tested-by: sephe