debugfs: Change debugfs directory of IWMC3200

Change default debugfs directory that mount for debugging
IWMC3200(Intel Wireless Multicomm 3200 WiFi driver).

As we all know, We need change default directory for consistency of
debugfs by Greg.K.H
Signed-off-by: NGeunSik Lim <geunsik.lim@samsung.com>
Acked-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/net/wireless/iwmc3200wifi/Kconfig

@@ -24,8 +24,8 @@ config IWM_DEBUG
 	  To see the list of debug modules and levels, see iwm/debug.h
 
 	  For example, if you want the full MLME debug output:
-	  echo 0xff > /debug/iwm/phyN/debug/mlme
+	  echo 0xff > /sys/kernel/debug/iwm/phyN/debug/mlme
 
 	  Or, if you want the full debug, for all modules:
-	  echo 0xff > /debug/iwm/phyN/debug/level
-	  echo 0xff > /debug/iwm/phyN/debug/modules
+	  echo 0xff > /sys/kernel/debug/iwm/phyN/debug/level
+	  echo 0xff > /sys/kernel/debug/iwm/phyN/debug/modules