replacing umlaute and fixing address in headers Haldeneggsteig -> Universitaetsstrasse

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>

irq: enable msi-x in conf header on route setup

Same mechanism as with legacy interrupts, pci_int_ctrl is now managing
which interrupt model will be activated in the confspace.

Signed-off-by: Lukas Humbel <lukas.humbel@inf.ethz.ch>