[media] dvb_usb_v2: use dvb_usb_dbg_usb_control_msg()

Convert drivers: au6610, ce6230, ec168, rtl28xxu for
dvb_usb_dbg_usb_control_msg() macro.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/usb/dvb-usb-v2/ec168.c b/drivers/media/usb/dvb-usb-v2/ec168.c
index ab77622..b74c810 100644
--- a/drivers/media/usb/dvb-usb-v2/ec168.c
+++ b/drivers/media/usb/dvb-usb-v2/ec168.c
@@ -86,8 +86,8 @@
 	ret = usb_control_msg(d->udev, pipe, request, requesttype, req->value,
 		req->index, buf, req->size, EC168_USB_TIMEOUT);
 
-	ec168_debug_dump(request, requesttype, req->value, req->index, buf,
-		req->size);
+	dvb_usb_dbg_usb_control_msg(d->udev, request, requesttype, req->value,
+			req->index, buf, req->size);
 
 	if (ret < 0)
 		goto err_dealloc;