Smack: fix kernel-doc interface on functions

The are some kernel-doc interface issues:
security/smack/smackfs.c:1950: warning: Function parameter or member
'list' not described in 'smk_parse_label_list'
security/smack/smackfs.c:1950: warning: Excess function parameter
'private' description in 'smk_parse_label_list'
security/smack/smackfs.c:1979: warning: Function parameter or member
'list' not described in 'smk_destroy_label_list'
security/smack/smackfs.c:1979: warning: Excess function parameter 'head'
description in 'smk_destroy_label_list'
security/smack/smackfs.c:2141: warning: Function parameter or member
'count' not described in 'smk_read_logging'
security/smack/smackfs.c:2141: warning: Excess function parameter 'cn'
description in 'smk_read_logging'
security/smack/smackfs.c:2278: warning: Function parameter or member
'format' not described in 'smk_user_access'

Correct them in this patch.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-security-module@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>

security/smack/smackfs.c

@@ -1942,7 +1942,7 @@ static void smk_list_swap_rcu(struct list_head *public,
  * smk_parse_label_list - parse list of Smack labels, separated by spaces
  *
  * @data: the string to parse
- * @private: destination list
+ * @list: destination list
  *
  * Returns zero on success or error code, as appropriate
  */
@@ -1973,7 +1973,7 @@ static int smk_parse_label_list(char *data, struct list_head *list)
 
 /**
  * smk_destroy_label_list - destroy a list of smack_known_list_elem
- * @head: header pointer of the list to destroy
+ * @list: header pointer of the list to destroy
  */
 void smk_destroy_label_list(struct list_head *list)
 {
@@ -2131,7 +2131,7 @@ static const struct file_operations smk_unconfined_ops = {
  * smk_read_logging - read() for /smack/logging
  * @filp: file pointer, not actually used
  * @buf: where to put the result
- * @cn: maximum to send along
+ * @count: maximum to send along
  * @ppos: where to start
  *
  * Returns number of bytes read or error code, as appropriate
@@ -2272,6 +2272,7 @@ static const struct file_operations smk_load_self_ops = {
  * @buf: data from user space
  * @count: bytes sent
  * @ppos: where to start - must be 0
+ * @format: /smack/load or /smack/load2 or /smack/change-rule format.
  */
 static ssize_t smk_user_access(struct file *file, const char __user *buf,
 				size_t count, loff_t *ppos, int format)