usb gadget: don't save bind callback in struct usb_configuration

The bind function is most of the time only called at init time so there
is no need to save a pointer to it in the configuration structure.

This fixes many section mismatches reported by modpost.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[m.nazarewicz@samsung.com: updated for -next]
Signed-off-by: Michał Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 9fcb158..af75e36 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -234,11 +234,10 @@
 
 		c->c.label			= gfs_strings[i].s;
 		c->c.iConfiguration		= gfs_strings[i].id;
-		c->c.bind			= gfs_do_config;
 		c->c.bConfigurationValue	= 1 + i;
 		c->c.bmAttributes		= USB_CONFIG_ATT_SELFPOWER;
 
-		ret = usb_add_config(cdev, &c->c);
+		ret = usb_add_config(cdev, &c->c, gfs_do_config);
 		if (unlikely(ret < 0))
 			goto error_unbind;
 	}