fanotify: sys_fanotify_mark declartion

This patch simply declares the new sys_fanotify_mark syscall

int fanotify_mark(int fanotify_fd, unsigned int flags, u64_mask,
		  int dfd const char *pathname)

Signed-off-by: Eric Paris <eparis@redhat.com>

kernel/sys_ni.c

@@ -184,3 +184,4 @@ cond_syscall(sys_perf_event_open);
 
 /* fanotify! */
 cond_syscall(sys_fanotify_init);
+cond_syscall(sys_fanotify_mark);