usb: chipidea: use common definition for USBMODE bits

Some of the bits of USBMODE register are defined in <usb/ehci_def.h>,
use them instead of having our own definitions.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index bdb0344..290946d 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1606,7 +1606,7 @@
 
 	if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
 		if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
-				USBMODE_CM_DEVICE) {
+				USBMODE_CM_DC) {
 			spin_unlock(&udc->lock);
 			return IRQ_NONE;
 		}