thermal: intel: Use sysfs_emit() for powerclamp cpumask

cpumask_get() is used as a sysfs getter for the cpumask module
parameter. Use sysfs_emit() and cpumask_pr_args() to emit the mask.

This prepares for removing cpumap_print_to_pagebuf().

Signed-off-by: Yury Norov <ynorov@nvidia.com>
Link: https://patch.msgid.link/20260528183625.870813-16-ynorov@nvidia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: Yury Norov

drivers/thermal/intel/intel_powerclamp.c

@@ -200,7 +200,7 @@ static int cpumask_get(char *buf, const struct kernel_param *kp)
 	if (!cpumask_available(idle_injection_cpu_mask))
 		return -ENODEV;
 
-	return cpumap_print_to_pagebuf(false, buf, idle_injection_cpu_mask);
+	return sysfs_emit(buf, "%*pb\n", cpumask_pr_args(idle_injection_cpu_mask));
 }
 
 static const struct kernel_param_ops cpumask_ops = {