sched,powerclamp: Convert to sched_set_fifo()

Because SCHED_FIFO is a broken scheduler model (see previous patches)
take away the priority field, the kernel can't possibly make an
informed decision.

Effectively no change.

Cc: [e-mail]
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Reviewed-by: Ingo Molnar <[e-mail]>

drivers/thermal/intel/intel_powerclamp.c

···
 				  */
 static bool clamping;
 
-static const struct sched_param sparam = {
-	.sched_priority = MAX_USER_RT_PRIO / 2,
-};
 struct powerclamp_worker_data {
 	struct kthread_worker *worker;
 	struct kthread_work balancing_work;
···
 	w_data->cpu = cpu;
 	w_data->clamping = true;
 	set_bit(cpu, cpu_clamping_mask);
-	sched_setscheduler(worker->task, SCHED_FIFO, &sparam);
+	sched_set_fifo(worker->task);
 	kthread_init_work(&w_data->balancing_work, clamp_balancing_func);
 	kthread_init_delayed_work(&w_data->idle_injection_work,
 				  clamp_idle_injection_func);