ASoC: Add another DAPM stat for neighbour checks

The number of times we look at a potentially connected neighbour is just
as important as the number of times we actually recurse into looking at
that neighbour so also collect that statistic.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/soc-dapm.h

@@ -540,6 +540,7 @@ struct snd_soc_dapm_widget_list {
 struct snd_soc_dapm_stats {
 	int power_checks;
 	int path_checks;
+	int neighbour_checks;
 };
 
 #endif