Smack: fix doc warning

Fix gcc W=1 warning:

security/smack/smack_access.c:342: warning: Function parameter or member 'ad' not described in 'smack_log'
security/smack/smack_access.c:403: warning: Function parameter or member 'skp' not described in 'smk_insert_entry'
security/smack/smack_access.c:487: warning: Function parameter or member 'level' not described in 'smk_netlbl_mls'
security/smack/smack_access.c:487: warning: Function parameter or member 'len' not described in 'smk_netlbl_mls'
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>

security/smack/smack_access.c

@@ -332,7 +332,7 @@ static void smack_log_callback(struct audit_buffer *ab, void *a)
  *  @object_label  : smack label of the object being accessed
  *  @request: requested permissions
  *  @result: result from smk_access
- *  @a:  auxiliary audit data
+ *  @ad:  auxiliary audit data
  *
  * Audit the granting or denial of permissions in accordance
  * with the policy.
@@ -396,6 +396,7 @@ struct hlist_head smack_known_hash[SMACK_HASH_SLOTS];
 
 /**
  * smk_insert_entry - insert a smack label into a hash map,
+ * @skp: smack label
  *
  * this function must be called under smack_known_lock
  */
@@ -476,8 +477,10 @@ char *smk_parse_smack(const char *string, int len)
 
 /**
  * smk_netlbl_mls - convert a catset to netlabel mls categories
+ * @level: MLS sensitivity level
  * @catset: the Smack categories
  * @sap: where to put the netlabel categories
+ * @len: number of bytes for the levels in a CIPSO IP option
  *
  * Allocates and fills attr.mls
  * Returns 0 on success, error code on failure.