regulator: max8649: fix missing regmap in rdev

In probe(), rdev->regmap must be assigned.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c
index 1f4bb80..9d540cd 100644
--- a/drivers/regulator/max8649.c
+++ b/drivers/regulator/max8649.c
@@ -259,6 +259,7 @@
 	config.dev = &client->dev;
 	config.init_data = pdata->regulator;
 	config.driver_data = info;
+	config.regmap = info->regmap;
 
 	info->regulator = regulator_register(&dcdc_desc, &config);
 	if (IS_ERR(info->regulator)) {