regmap: Export regmap_async_complete()

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6d1e756..296df36 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1655,6 +1655,7 @@
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(regmap_async_complete);
 
 /**
  * regmap_register_patch: Register and apply register updates to be applied