Update pciutils to 3.6.3.

2020-01-22  Martin Mares <mj@ucw.cz>

* Released as 3.6.3.

* `lspci -t' (tree mode) can be combined with `-s' to show a sub-tree.
  We also fixed potential buffer overflows in the tree dumper.

* Cleaned messy code for dumping of I/O, memory, and ROM regions.
  This helped fixing a bug, which caused some 64-bit regions to be
  reported as virtual. All flags are now printed after the address
  (previously, "[virtual]" and "[enhanced]" were before it for no good
  reason).

* Added pci_find_cap_nr() to the library, which handles capabilities
  which occur multiple times in a single device.

* Minor improvements in printing of PCIe capabilities.

* We now decode the Multicast and Secondary PCI Express extended
  capabilities.

* The list of capability names available to setpci was updated.

* Minor bugs were fixed in FreeBSD and Solaris ports.

* We now prefer HTTPS URLs in all documentation

* The pci.ids file has a man page.

* As usually, updated pci.ids to the current snapshot of the database.

(msaitoh)