drm/i915: Remove extra "ring"

Sadly, this isn't the first time we've done this:
http://lists.freedesktop.org/archives/intel-gfx/2013-June/029065.html

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -1462,7 +1462,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 
 	for_each_ring(ring, dev_priv, i) {
 		if (ring->default_context) {
-			seq_printf(m, "HW default context %s ring ", ring->name);
+			seq_printf(m, "HW default context %s ", ring->name);
 			describe_obj(m, ring->default_context->obj);
 			seq_putc(m, '\n');
 		}