drm/i915/selftests: Prepare context selftest for obj->mm.lock removal

Only needs to convert a single call to the unlocked version.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-52-maarten.lankhorst@linux.intel.com

drivers/gpu/drm/i915/gt/selftest_context.c

@@ -88,7 +88,7 @@ static int __live_context_size(struct intel_engine_cs *engine)
 	if (err)
 		goto err;
 
-	vaddr = i915_gem_object_pin_map(ce->state->obj,
+	vaddr = i915_gem_object_pin_map_unlocked(ce->state->obj,
 						 i915_coherent_map_type(engine->i915));
 	if (IS_ERR(vaddr)) {
 		err = PTR_ERR(vaddr);