thermal: intel: hfi: use cpumask_empty() in intel_hfi_offline()

cpumask_empty() is more efficient as it may return earlier.

Switch to using it.

Signed-off-by: Yury Norov <ynorov@nvidia.com>
Link: https://patch.msgid.link/20260314191016.603067-1-ynorov@nvidia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: Yury Norov

drivers/thermal/intel/intel_hfi.c

@@ -526,7 +526,7 @@ void intel_hfi_offline(unsigned int cpu)
 	mutex_lock(&hfi_instance_lock);
 	cpumask_clear_cpu(cpu, hfi_instance->cpus);
 
-	if (!cpumask_weight(hfi_instance->cpus))
+	if (cpumask_empty(hfi_instance->cpus))
 		hfi_disable();
 
 	mutex_unlock(&hfi_instance_lock);