apparmor: add lib fn to find the "split" for fqnames

Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/include/lib.h

@@ -38,6 +38,8 @@ extern int apparmor_initialized __initdata;
 
 /* fn's in lib */
 char *aa_split_fqname(char *args, char **ns_name);
+const char *aa_splitn_fqname(const char *fqname, size_t n, const char **ns_name,
+			     size_t *ns_len);
 void aa_info_message(const char *str);
 void *__aa_kvmalloc(size_t size, gfp_t flags);