ASoC: Also count neighbour checks for supplies

Missed when the stat was originally added.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 2bde6b0..c277228 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -828,6 +828,8 @@
 
 	/* Check if one of our outputs is connected */
 	list_for_each_entry(path, &w->sinks, list_source) {
+		DAPM_UPDATE_STAT(w, neighbour_checks);
+
 		if (path->weak)
 			continue;