staging: emxx_udc: use common is_selfpowered

Delete private selfpowered variable, and use common one.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/staging/emxx_udc/emxx_udc.c

@@ -1608,7 +1608,7 @@ static int std_req_get_status(struct nbu2ss_udc *udc)
 	switch (recipient) {
 	case USB_RECIP_DEVICE:
 		if (udc->ctrl.wIndex == 0x0000) {
-			if (udc->self_powered)
+			if (udc->gadget.is_selfpowered)
 				status_data |= (1 << USB_DEVICE_SELF_POWERED);
 
 			if (udc->remote_wakeup)
@@ -3117,7 +3117,6 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
 static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget,
 					int is_selfpowered)
 {
-	struct nbu2ss_udc	*udc;
 	unsigned long		flags;
 
 /*	INFO("=== %s()\n", __func__); */
@@ -3127,10 +3126,8 @@ static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget,
 		return -EINVAL;
 	}
 
-	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
-
 	spin_lock_irqsave(&udc->lock, flags);
-	udc->self_powered = (is_selfpowered != 0);
+	pgadget->is_selfpowered = (is_selfpowered != 0);
 	spin_unlock_irqrestore(&udc->lock, flags);
 
 	return 0;
@@ -3308,7 +3305,7 @@ static int __init nbu2ss_drv_contest_init(
 	spin_lock_init(&udc->lock);
 	udc->dev = &pdev->dev;
 
-	udc->self_powered = 1;
+	udc->gadget.is_selfpowered = 1;
 	udc->devstate = USB_STATE_NOTATTACHED;
 	udc->pdev = pdev;
 	udc->mA = 0;

drivers/staging/emxx_udc/emxx_udc.h

@@ -624,7 +624,6 @@ struct nbu2ss_udc {
 	unsigned		linux_suspended:1;
 	unsigned		linux_resume:1;
 	unsigned		usb_suspended:1;
-	unsigned		self_powered:1;
 	unsigned		remote_wakeup:1;
 	unsigned		udc_enabled:1;