USB: gadget: f_fs: functionfs_add() renamed to functionfs_bind_config()

FunctionFS 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 <[e-mail]>
Signed-off-by: Kyungmin Park <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/gadget/f_fs.c

···
 }
 
 
-static int functionfs_add(struct usb_composite_dev *cdev,
-			  struct usb_configuration *c,
-			  struct ffs_data *ffs)
+static int functionfs_bind_config(struct usb_composite_dev *cdev,
+				  struct usb_configuration *c,
+				  struct ffs_data *ffs)
 {
 	struct ffs_function *func;
 	int ret;

drivers/usb/gadget/g_ffs.c

···
 			return ret;
 	}
 
-	ret = functionfs_add(c->cdev, c, gfs_ffs_data);
+	ret = functionfs_bind_config(c->cdev, c, gfs_ffs_data);
 	if (unlikely(ret < 0))
 		return ret;
 

include/linux/usb/functionfs.h

···
 static void functionfs_unbind(struct ffs_data *ffs)
 	__attribute__((nonnull));
 
-static int functionfs_add(struct usb_composite_dev *cdev,
-			  struct usb_configuration *c,
-			  struct ffs_data *ffs)
+static int functionfs_bind_config(struct usb_composite_dev *cdev,
+				  struct usb_configuration *c,
+				  struct ffs_data *ffs)
 	__attribute__((warn_unused_result, nonnull));