max8998_charger: Allow full timeout not set, leave it unchanged

Add a missing break for case 0 of pdata->timeout, otherwise it will fall
through to the default case and return error.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/max8998_charger.c b/drivers/power/max8998_charger.c
index 8ac5fab..6f5ffc3 100644
--- a/drivers/power/max8998_charger.c
+++ b/drivers/power/max8998_charger.c
@@ -153,6 +153,7 @@
 	case 0:
 		dev_dbg(max8998->dev,
 			"Full Timeout not set: leave it unchanged.\n");
+		break;
 	default:
 		dev_err(max8998->dev, "Invalid Full Timeout value\n");
 		ret = -EINVAL;