USB: gadget: f_mass_storage: fsg_add() renamed to fsg_bind_config()

Mass Storage Function had a bit unique name for function
used to add it to USB configuration.  Renamed as to match
naming convention of other functions.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index e68c00e..2b11e20 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -161,7 +161,7 @@
 	if (IS_ERR(retp))
 		return PTR_ERR(retp);
 
-	ret = fsg_add(c->cdev, c, &common);
+	ret = fsg_bind_config(c->cdev, c, &common);
 	fsg_common_put(&common);
 	return ret;
 }