media: gspca: dtcs033: use %*ph to print small buffer

Use %*ph format to print small buffer as hex string.

Remove newline at the end of the format string as it would be duplicated
by the one supplied as last argument.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Antonio Cardace <anto.cardace@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/gspca/dtcs033.c

@@ -76,12 +76,10 @@ static int reg_reqs(struct gspca_dev *gspca_dev,
 		} else if (preq->bRequestType & USB_DIR_IN) {
 
 			gspca_dbg(gspca_dev, D_STREAM,
-				  "USB IN (%d) returned[%d] %02X %02X %02X %s\n",
+				  "USB IN (%d) returned[%d] %3ph %s",
 				  i,
 				  preq->wLength,
-				  gspca_dev->usb_buf[0],
-				  gspca_dev->usb_buf[1],
-				  gspca_dev->usb_buf[2],
+				  gspca_dev->usb_buf,
 				  preq->wLength > 3 ? "...\n" : "\n");
 		}