devfreq: Use sysfs_emit() for cpumask show callbacks

These callbacks are sysfs show paths. Use sysfs_emit() and
cpumask_pr_args() to emit the masks.

This prepares for removing cpumap_print_to_pagebuf().

Signed-off-by: Yury Norov <[email protected]>

drivers/devfreq/event/rockchip-dfi.c

@@ -354,7 +354,7 @@ static ssize_t ddr_perf_cpumask_show(struct device *dev,
 	struct pmu *pmu = dev_get_drvdata(dev);
 	struct rockchip_dfi *dfi = container_of(pmu, struct rockchip_dfi, pmu);
 
-	return cpumap_print_to_pagebuf(true, buf, cpumask_of(dfi->cpu));
+	return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(cpumask_of(dfi->cpu)));
 }
 
 static struct device_attribute ddr_perf_cpumask_attr =

drivers/devfreq/hisi_uncore_freq.c

@@ -540,7 +540,7 @@ static ssize_t related_cpus_show(struct device *dev,
 {
 	struct hisi_uncore_freq *uncore = dev_get_drvdata(dev->parent);
 
-	return cpumap_print_to_pagebuf(true, buf, &uncore->related_cpus);
+	return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(&uncore->related_cpus));
 }
 
 static DEVICE_ATTR_RO(related_cpus);