unbind_all_network_devices: fix regexp to cover all pci devices
unbind_all_network_devices: fix regexp to cover all pci devices

http://www.qubes-os.org/trac/ticket/19

woju/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin