rtlwifi: btcoex: 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>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200730154026.39901-1-andriy.shevchenko@linux.intel.com

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c

@@ -894,11 +894,9 @@ static void halbtc_display_wifi_status(struct btc_coexist *btcoexist,
 		   (low_power ? ", 32k" : ""));
 
 	seq_printf(m,
-		   "\n %-35s = %02x %02x %02x %02x %02x %02x (0x%x/0x%x)",
+		   "\n %-35s = %6ph (0x%x/0x%x)",
 		   "Power mode cmd(lps/rpwm)",
-		   btcoexist->pwr_mode_val[0], btcoexist->pwr_mode_val[1],
-		   btcoexist->pwr_mode_val[2], btcoexist->pwr_mode_val[3],
-		   btcoexist->pwr_mode_val[4], btcoexist->pwr_mode_val[5],
+		   btcoexist->pwr_mode_val,
 		   btcoexist->bt_info.lps_val,
 		   btcoexist->bt_info.rpwm_val);
 }