drm/i915: add mappable to gem_object_bind tracepoint

This way we can make some more educated guesses as to why exactly
we can't use 2G apertures to their full potential ;)

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 6d9971f..bb5435b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2775,7 +2775,7 @@
 	BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS);
 
 	obj_priv->gtt_offset = obj_priv->gtt_space->start;
-	trace_i915_gem_object_bind(obj, obj_priv->gtt_offset);
+	trace_i915_gem_object_bind(obj, obj_priv->gtt_offset, mappable);
 
 	return 0;
 }