Log Message:
Update pciutils to 3.5.6.

2017-11-17  Martin Mares <mj@ucw.cz>

	* Released as 3.5.6.

	* Improvements of the FreeBSD back-end: read-only access for non-root,
	  support DragonFly BSD, support extended config space.

	* MN VPD keyword is decoded correctly.

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