[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>

drivers/media/usb/dvb-usb-v2/ce6230.h

@@ -26,17 +26,6 @@
 #include "zl10353.h"
 #include "mxl5005s.h"
 
-#define ce6230_debug_dump(r, t, v, i, b, l) { \
-	char *direction; \
-	if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \
-		direction = ">>>"; \
-	else \
-		direction = "<<<"; \
-	pr_debug("%s: %02x %02x %02x %02x %02x %02x %02x %02x %s [%d bytes]\n", \
-			 __func__, t, r, v & 0xff, v >> 8, i & 0xff, i >> 8, \
-			l & 0xff, l >> 8, direction, l); \
-}
-
 #define CE6230_USB_TIMEOUT 1000
 
 struct usb_req {