ray_cs: use %*ph to print small buffer

Use %*ph format to print small buffer as hex string.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210712142943.23981-1-andriy.shevchenko@linux.intel.com

drivers/net/wireless/ray_cs.c

@@ -2424,9 +2424,7 @@ static void rx_authenticate(ray_dev_t *local, struct rcs __iomem *prcs,
 	copy_from_rx_buff(local, buff, pkt_addr, rx_len & 0xff);
 	/* if we are trying to get authenticated */
 	if (local->sparm.b4.a_network_type == ADHOC) {
-		pr_debug("ray_cs rx_auth var= %02x %02x %02x %02x %02x %02x\n",
-		      msg->var[0], msg->var[1], msg->var[2], msg->var[3],
-		      msg->var[4], msg->var[5]);
+		pr_debug("ray_cs rx_auth var= %6ph\n", msg->var);
 		if (msg->var[2] == 1) {
 			pr_debug("ray_cs Sending authentication response.\n");
 			if (!build_auth_frame