drm/i915/lrc: Do not wait atomically when stopping engines

I do not see that this needs to be done atomically and up to
one second is quite a long time to busy loop.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_lrc.c

@@ -1062,7 +1062,7 @@ void intel_logical_ring_stop(struct intel_engine_cs *ring)
 
 	/* TODO: Is this correct with Execlists enabled? */
 	I915_WRITE_MODE(ring, _MASKED_BIT_ENABLE(STOP_RING));
-	if (wait_for_atomic((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) {
+	if (wait_for((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) {
 		DRM_ERROR("%s :timed out trying to stop ring\n", ring->name);
 		return;
 	}