USB: use %*ph specifier in uss720 driver

There is a %*ph specifier that allows to dump small buffers. This patch
converts the code to use the specifier.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/misc/uss720.c

@@ -124,12 +124,8 @@ static void async_complete(struct urb *urb)
 	} else if (rq->dr->bRequest == 3) {
 		memcpy(priv->reg, rq->reg, sizeof(priv->reg));
 #if 0
-		dev_dbg(&priv->usbdev->dev,
-			"async_complete regs %02x %02x %02x %02x %02x %02x %02x\n",
-			(unsigned int)priv->reg[0], (unsigned int)priv->reg[1],
-			(unsigned int)priv->reg[2], (unsigned int)priv->reg[3],
-			(unsigned int)priv->reg[4], (unsigned int)priv->reg[5],
-			(unsigned int)priv->reg[6]);
+		dev_dbg(&priv->usbdev->dev, "async_complete regs %7ph\n",
+			priv->reg);
 #endif
 		/* if nAck interrupts are enabled and we have an interrupt, call the interrupt procedure */
 		if (rq->reg[2] & rq->reg[1] & 0x10 && pp)
@@ -742,9 +738,7 @@ static int uss720_probe(struct usb_interface *intf,
 	set_1284_register(pp, 2, 0x0c, GFP_KERNEL);
 	/* debugging */
 	get_1284_register(pp, 0, &reg, GFP_KERNEL);
-	dev_dbg(&intf->dev, "reg: %02x %02x %02x %02x %02x %02x %02x\n",
-		priv->reg[0], priv->reg[1], priv->reg[2], priv->reg[3],
-		priv->reg[4], priv->reg[5], priv->reg[6]);
+	dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg);
 
 	endpoint = &interface->endpoint[2];
 	dev_dbg(&intf->dev, "epaddr %d interval %d\n",