drm/xe: Fix merge fails related to display runtime PM

drm/xe: Fix merge fails related to display runtime PM

The most recent merge commits introduced some fails to drm/drm-next,
I've noticed these when looking at the xe patches.

Solve it!

Fixes: 8bdb468dd7a5 ("Merge tag 'drm-xe-next-2024-08-28' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[sima: add fixes line, and drop 3rd hunk because that's just a bugfix,
not mismerge, which should go in seperately with proper fixes line and
review/testing.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902112002.489225-1-maarten.lankhorst@linux.intel.com