usb: pxa27x_udc: remove IRQ_USB define

IRQ_USB was implicitly included by gpio.h. Use the existing variable
instead of IRQ_USB.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 644b430..7a8713c 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2508,7 +2508,7 @@
 			IRQF_SHARED, driver_name, udc);
 	if (retval != 0) {
 		dev_err(udc->dev, "%s: can't get irq %i, err %d\n",
-			driver_name, IRQ_USB, retval);
+			driver_name, udc->irq, retval);
 		goto err_irq;
 	}
 	retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);