If the CONFIG_PCIE_PRT option is disabled it makes no sense to bloat the
ACPI build with PRT-related code or static tables. The diff looks a bit
larger since functions in acpi.c had to be shuffled around to be able to
be included in a single "#ifdef CONFIG_PCIE_PRT" block.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>