rcu: Add lockdep_assert_irqs_disabled() to rcu_exp_need_qs()

Callers to rcu_exp_need_qs() are supposed to disable interrupts, so this
commit enlists lockdep's aid in checking this.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>

kernel/rcu/tree_exp.h

@@ -722,6 +722,7 @@ static void rcu_exp_sel_wait_wake(unsigned long s)
 /* Request an expedited quiescent state. */
 static void rcu_exp_need_qs(void)
 {
+	lockdep_assert_irqs_disabled();
 	ASSERT_EXCLUSIVE_WRITER_SCOPED(*this_cpu_ptr(&rcu_data.cpu_no_qs.b.exp));
 	__this_cpu_write(rcu_data.cpu_no_qs.b.exp, true);
 	/* Store .exp before .rcu_urgent_qs. */