ANDROID: Fix wq fp check for CFI builds

A previous change added a test on the wrong config flag; rename
CFI to CFI_CLANG.

Bug: 145210207
Change-Id: Id8aead2eb2c75ad6442d10165f6cb86ccfb9c2f9
Signed-off-by: Alistair Delva <adelva@google.com>

kernel/workqueue.c

@@ -1621,7 +1621,7 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
 	struct work_struct *work = &dwork->work;
 
 	WARN_ON_ONCE(!wq);
-#ifndef CONFIG_CFI
+#ifndef CONFIG_CFI_CLANG
 	WARN_ON_ONCE(timer->function != delayed_work_timer_fn);
 #endif
 	WARN_ON_ONCE(timer_pending(timer));