drm/xe: s/ENGINE_STATE_SUSPENDED/EXEC_QUEUE_STATE_SUSPENDED

Exec queue has replaced engine nomenclature.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425232544.1935578-3-matthew.brost@intel.com