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: 8bdb468d ("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

drivers/gpu/drm/xe/display/xe_display.c

@@ -341,8 +341,6 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime)
 
 	xe_display_flush_cleanup_work(xe);
 
-	xe_display_flush_cleanup_work(xe);
-
 	intel_dp_mst_suspend(xe);
 
 	intel_hpd_cancel_work(xe);

drivers/gpu/drm/xe/xe_pm.c

@@ -392,8 +392,6 @@ int xe_pm_runtime_suspend(struct xe_device *xe)
 	xe_display_pm_runtime_suspend(xe);
 
 	if (xe->d3cold.allowed) {
-		xe_display_pm_suspend(xe, true);
-
 		err = xe_bo_evict_all(xe);
 		if (err)
 			goto out;