USB: atmel-usba-udc : fix control out requests.

usbtest #14 was failing with "udc: ep0: TXCOMP: Invalid endpoint state 2, halting endpoint..."
This occured since ep0 is bidirectional and ep->is_in is not valid (must always use ep->state)
Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/atmel_usba_udc.c

@@ -794,7 +794,8 @@ usba_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 	if (ep->desc) {
 		list_add_tail(&req->queue, &ep->queue);
 
-		if (ep->is_in || (ep_is_control(ep)
+		if ((!ep_is_control(ep) && ep->is_in) ||
+			(ep_is_control(ep)
 				&& (ep->state == DATA_STAGE_IN
 					|| ep->state == STATUS_STAGE_IN)))
 			usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY);