net/lapb: tuse %*ph to dump buffers

Use %*ph specifier to dump small buffers in hex format instead doing this
byte-by-byte.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/lapb/lapb_out.c b/net/lapb/lapb_out.c
index ba4d015..482c94d 100644
--- a/net/lapb/lapb_out.c
+++ b/net/lapb/lapb_out.c
@@ -148,9 +148,7 @@
 		}
 	}
 
-	lapb_dbg(2, "(%p) S%d TX %02X %02X %02X\n",
-		 lapb->dev, lapb->state,
-		 skb->data[0], skb->data[1], skb->data[2]);
+	lapb_dbg(2, "(%p) S%d TX %3ph\n", lapb->dev, lapb->state, skb->data);
 
 	if (!lapb_data_transmit(lapb, skb))
 		kfree_skb(skb);