iwlwifi: add debugfs ops to iwlwifi

Seperate debugfs functions into iwlagn specific
debugfs file and Add debugfs ops to iwlwifi.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h
index 1c7b53d..5c2bcef5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debug.h
+++ b/drivers/net/wireless/iwlwifi/iwl-debug.h
@@ -78,6 +78,8 @@
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name);
 void iwl_dbgfs_unregister(struct iwl_priv *priv);
+extern int iwl_dbgfs_statistics_flag(struct iwl_priv *priv, char *buf,
+				     int bufsz);
 #else
 static inline int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
 {