Bug#1025213: DRM platform with kms_swrast

[Gert van de Kraats]

If the i915 dri driver is present gnome-shell is using the DRM platform
(not the Wayland platform?) with this driver.
If i915 is not present gnome-shell uses the DRM platform with the
kms_swrast-driver!
I did not see this with the lsof-command, because the name of the 
"zink"-driver was
shown which is hard-linked to the other dri-drivers and was opened and 
checked
unsuccessfully before the "kms_swrast" driver.

I tried an old version 22.0.5-1 of kms_swrast driver, but that did not help.
I will open an issue upstream.