vm-systemd: enable dummy modules and psu client

vm-systemd/75-qubes-vm.preset

@@ -104,6 +104,9 @@ enable xendriverdomain.service
 enable systemd-timesyncd.service
 enable qubes-sync-time.service
 enable qubes-sync-time.timer
+enable module-load-dummy-psu.service
+enable module-load-dummy-backlight.service
+enable qubes-psu-client.service
 
 # Disable useless Xen services in Qubes VM
 disable xenstored.service